The secretions of interleukin-6 (IL-6), interleukin-8 (IL-8), and tumor necrosis factor-alpha (TNF-alpha) in cell culture supernatants were quantified by enzyme-linked immunosorbent assay (ELISA). The messenger RNA (mRNA) expressions of IL-6, IL-8, and TNF-alpha were tested by quantitative real-time polymerase chain reaction (real-time RT-PCR). Furthermore, Western blotting was used to determine whether the signaling pathway GSK1838705A NF-kappa B was involved in the anti-inflammatory action of baicalin. The inflammatory cell model was successfully built with 10 mu g/ml LPS for

24 h in our in vitro experiments. Both the secretions and the mRNA expressions of IL-6, IL-8, and TNF-alpha were significantly inhibited by baicalin. Moreover, the expression levels of phospho-IKK alpha/beta

and phospho-NF-kappa B p65 were downregulated, and the phospho-I kappa B-alpha level was upregulated by baicalin. These findings suggest that the anti-inflammatory properties of baicalin may be resulted from the inhibition of IL-6, IL-8, and TNF-alpha expression via preventing signaling NF-kappa B pathway in HBE16 airway epithelial cells. In addition, this study provides evidence to understand the therapeutic effects of baicalin on inflammatory diseases in clinical practice.”
“Design: Recombinant human TSH-stimulated thyroglobulin (Tg) levels (rhTSH-Tg) are sufficient for early follow-up of low-risk differentiated thyroid cancer (DTC) patients after thyroidectomy PR-171 and radioiodine ((131)I) remnant ablation (RAI). Serum Tg levels at the time of remnant ablation (ablation-Tg) is thought to be related with rhTSH-Tg and may be predictive of recurrent disease. During long-term follow-up, Tg levels on levo-T(4) (L-T(4)) suppressive treatment (suppressive-Tg) is sufficiently sensitive to avoid further evaluations in patients with undetectable rhTSH-Tg. The aim of our study was to verify whether, in a subgroup of low-risk DTC patients, the association of low ablation-Tg levels (<10 mu g/l) with undetectable

buy BIIB057 suppressive-Tg concentrations has a sufficient negative predictive value (NPV) for recurrence of disease, leading to avoid rhTSH testing. Methods: We enrolled 169 low-risk DTC patients treated by thyroidectomy + RAI and undetectable suppressive-Tg at 12-month follow-up. In all patients, we retrospectively evaluated ablation-Tg and rhTSH-Tg. For all patients, 2-yr follow-up was available. Results: Based on rhTSH-Tg>2 mu g/l, relapsing disease was histologically proven in 2 patients. rhTSH-Tg levels between 0.6-2.0 mu g/l, with no evidence of disease, was observed in 10 patients (6%). One hundred and fifty-seven patients showed undetectable rhTSH-Tg. The NPV of undetectable suppressive-Tg was 92.8%. The ablation-Tg level was <10 mu g/l in 140 patients. In this group, the NPV of undetectable suppressive-Tg was 100%.

These changes give the latter the thyroid stimulating properties and signs of hyperthyroidism.\n\nConclusion.

– Molar pregnancy may be a cause of hyperthyroidism. The diagnosis of molar pregnancy should be a mention to thyrotoxicosique syndrome in a woman of childbearing age. (C) 2013 Published by Elsevier Masson SAS on behalf of the Societe nationale francaise de medecine interne (SNFMI).”
“Background: Acute generalized exanthematous pustulosis (AGEP) is a rare and severe subtype of drug eruption, characterized by acute, extensive, non-follicular, sterile pustules on an erythematous background, accompanied by fever and leukocytosis. Objective: The purpose of this study was to characterize AGEP in Korean patients in terms of clinical, laboratory, and pathologic findings. RG-7388 inhibitor Methods: Thirty-six

patients (M:F = 17:19) with AGEP were identified from an extensive review of medical records over a 15 year period. All patient cases were confirmed by biopsy and fulfilled the diagnostic criteria. Results: The patient ages ranged from 4 similar to 80 years (37.6 +/- 19.4). The incubation period was 1 similar to 23 days. The duration of disease was 5 similar to 14 clays. Neutrophilia (36/36), high CRP (14/36), and eosinophilia (30/36) were common laboratory findings. A history of www.selleckchem.com/products/bindarit.html drug administration existed in 23 of 36 patients; herbal medications, lacquers and radiocontrast media were the unique causative drugs. Spongioform subcorneal or intraepidermal pustules

in the epidermis was observed in all patients. Thirty-six patients were subdivided into 2 groups: group A (n = 23) was strongly associated with known agents; and group B (n = 13) had no identified causative agents. There was no significant difference between the 2 groups. Conclusion: Our results demonstrate the characteristic features of AGEP in Korean patients as follows: lower identification of causative agents; herbal medications, lacquers, and radiocontrast media were the main causative agents; and no significant differences existed between the 2 groups. (Ann Dermatol 22(2) 163 similar to 169, 2010)”
“Orthodontic approximation has been proposed as a tool for restoring the lost papilla. A prospective analysis was performed to evaluate the changes in the https://www.selleckchem.com/products/Nutlin-3.html levels of interdental papilla and alveolar crest following an orthodontic approximation. The levels of interdental papilla and alveolar crest increased; however, the interradicular distance did not influence the level of the interdental papilla or papilla score. Interestingly, the shape of the teeth had a significant impact on the interdental papilla score. In conclusion, orthodontic approximation significantly enhanced the level of the interdental papilla and interproximal alveolar crest, producing an improved esthetic outcome.

1%] of 31 versus 3 [18.7%] of 16; P < .001) on days 8, 13, and 18 after culture. Maturation arrest at premeiotic SSCs was associated with a greater number and larger diameter of germ cell colonies compared with the maturation arrest at primary spermatocyte and secondary spermatocyte/spermatid stages (P < .001).\n\nCONCLUSION https://www.selleckchem.com/products/INCB18424.html Infertile men with testicular histologic findings of maturation arrest at the premeiotic spermatogonia stage were seemingly the most appropriate candidates for

testicular biopsy and in vitro propagation of human SSCs, regardless of their demographic/clinical characteristics. UROLOGY 78: 1075-1081, 2011. (C) 2011 Elsevier Inc.”
“P>Despite the many advances in the management of patients with acute heart failure, the outcome for patients with SNS-032 refractory acute cardiogenic shock remains disproportionately poor. Clearly, there is a definitive role for wider application of temporary circulatory support in such patients. Questions remain as to the ideal device, the optimal duration of temporary support, and the ideal timing to bridge these patients to a long-term device. There are currently several options available for circulatory support and include surgically implanted ventricular assist devices, percutaneous assist devices, and extracorporeal membrane oxygenation. This

review includes a brief summary of the current assist devices available along with the University of Minnesota’s experience with the Levitronix CentriMag system. (J Card Surg 2010;25:425-433).”
“Simple sequence repeat (SSR) markers were developed from the expressed sequence tags (ESTs) of Pacific abalone (Haliotis discus hannai). Repeat motifs were found in 4.95% of the ESTs at a frequency of one repeat every 10.04 kb of EST sequences, after redundancy elimination. Seventeen polymorphic EST-SSRs were developed. The number of alleles per locus varied from 2-17, with an average of 6.8 alleles per locus. The expected and observed heterozygosities ranged

from 0.159 to 0.928 and from 0.132 to 0.922, respectively. Twelve MAPK inhibitor of the 17 loci (70.6%) were successfully amplified in H. diversicolor. Seventeen loci segregated in three families, with three showing the presence of null alleles (17.6%). The adequate level of variability and low frequency of null alleles observed in H. discus hannai, together with the high rate of transportability across Haliotis species, make this set of EST-SSR markers an important tool for comparative mapping, marker-assisted selection, and evolutionary studies, not only in the Pacific abalone, but also in related species.”
“Randomly Amplified Polymorphic DNA (RAPD) technology was used to work out the genetic relationship among the twenty one accessions of Jasminum spp.

\n\nRESULTS:\n\nThe EZH2 protein levels in the specimens of normal gastric tissue, NCAG, CAG with IM, DYS and intestinal-type GC were gradually increased (P < 0.05), but statistical significance was not found between the groups of DYS and GC.\n\nCONCLUSION:\n\nPcG protein EZH2 plays an important role in the multi-step process of intestinal-type

AZD2014 order gastric carcinogenesis.”
“Vertebrate brains share many features in common. Early in development, both the hindbrain and diencephalon are built similarly. Only later in time do differences in morphology occur. Factors that could potentially influence such changes include certain physiological properties of neurons. As an initial step to investigate this problem, embryonic Alligator brain neurons were cultured and calcium responses were A-1331852 cost characterized. The present report is the first to document culture of Alligator brain neurons in artificial cerebrospinal fluid (ACSF) as well as in standard mammalian tissue culture medium supplemented with growth factors. Alligator brain neuron cultures were viable for at least 1 week with unipolar neurites emerging by 24 hours. Employing Fura-2

AM, robust depolarizationinduced calcium influx, was observed in these neurons. Using selective blockers of the voltage-gated calcium channels, the contributions of N-, P/Q-, R-, T-, and L-type channels in these neurons were assessed and their presence documented. Lastly, Alligator brain neurons were challenged with an excitotoxic stimulus (glutamate + glycine) where delayed calcium deregulation could be prevented by a classical NMDA receptor antagonist.”
“Aims p16(INK4a) is an important factor in carcinogenesis, and its expression is linked to oncogene-induced senescence. Very recently it was shown that upregulation and downregulation of p16 indicates a senescence barrier in the serrated route of colorectal cancer. However, in soft tissue sarcoma (STS), the senescence

mechanism is still not understood. In this study, we analysed a well characterised cohort of STS for p16(INK4a) expression and correlated the results with clinicopathological parameters including survival. Methods selleck chemical Tissue microarrays (TMA) of 183 soft tissue and bone tumours were analysed immunohistochemically. Furthermore, mRNA expression of p16(INK4a) was evaluated in four sarcoma cell lines, and a demethylation test was performed by treatment with 5-aza-2 ‘-deoxycytide. Results On protein level, expression of p16(INK4a) was observed in undifferentiated pleomorphic sarcoma (UPS) in 69.1%, leiomyosarcoma in 85.7%, synovial sarcoma in 77.8%, liposarcoma in 88.9%, angiosarcoma in 60.9% and MPNST in 22.2%. Loss of p16(INK4a) was observed in high grade sarcomas and showed a significant correlation with reduced patient survival (p=0.032). On DNA level, one out of four sarcoma cell lines exhibited a methylated p16(INK4a) promoter analysed by methylation-specific PCR.

Two independent reviewers undertook decisions about study eligibility and data abstraction. Data were pooled using a random effects model. Ten prospective randomized controlled trials fulfilled our eligibility criteria and they included a total of 6752 patients. We did not detect PXD101 datasheet differences between PCI vs medical therapy for all-cause mortality (663 events; relative risk [RR], 0.97 [confidence interval (CI), 0.84-1.12]; I-2 = 0%), CV mortality (214 events; RR, 0.91 [CI, 0.70-1.17]; I-2 = 0%), MI (472 events; RR, 1.09 [CI, 0.92-1.29]; I-2 = 0%), or angina relief at the

end of follow-up (2016 events; RR, 1.10 [CI, 0.97-1.26]; I-2=85%). PCI was not associated with reductions in all-cause or CV mortality, MI, or angina relief. Considering the cost implication and the lack of clear clinical benefit, these findings continue to support existing clinical

practice guidelines that medical therapy be considered the most appropriate initial clinical management for patients with stable angina.”
“More than 27 million Americans undergo noncardiac surgery annually. Cardiac SBE-β-CD concentration complications can be a major source of morbidity and mortality in the perioperative period. Preoperative risk stratification, intraoperative ischemia monitoring and postoperative surveillance help to predict, identify and efficiently treat these adverse events. A renewed emphasis on preoperative evaluation has helped to identify patients at an increased risk for adverse cardiac events and thus, implement noninvasive or invasive cardio protective strategies in an attempt to minimize these complications. In this review we briefly describe the current evidence on perioperative management of

patients presenting for noncardiac surgery. As the surgeon will remain one of the first to evaluate patients before noncardiac surgery it is essential he/she be well versed with this information. (C) 2010 Surgical Associates Ltd. Published by Elsevier Ltd. All rights reserved.”
“Objectives: Both Osteoradionecrosis (ORN) and Bisphosphonate associated osteonecrosis of the jaws (BRONJ) present clinically as regions of exposed necrotic bone. The study aimed to demonstrate the histopathological differences behind the observed clinical see more similarities. Study Design: Ten ORN specimens and ten BRONJ specimens were used, as well as ten samples of normal mandibular bone as control. Two bone-specific stainings were used, i.e. Sirius Red for the study of the relative presence of collagen types I and III and toluidine blue for the study the osteon density. Results: The Red Green Blue (RGB)-analysis of the specimens stained with Sirius Red identified significant differences between the chromatic patterns observed in bone preparations of patients suffering from ORN when compared to both BRONJ and control samples.

In conclusion, HIV prevalence was high among Black MSM in NYC, as was lack of awareness of HIV-positive status. Having a sexual partner of same race/ethnicity or older age was not associated with having

UAI among Black MSM.”
“Studies have shown that topical 5-aminolevulinic acid-mediated photodynamic therapy (ALA-PDT) can be used successfully for the treatment of oral verrucous hyperplasia (OVH). Studies have also demonstrated that cryotherapy could Danusertib cost be used as a treatment modality for OVH lesions. In this case report, we tested the efficacy of topical ALA-PDT, combined with cryogun cryotherapy, for an extensive OVH lesion on the right buccal mucosa of a 65-year-old male areca quid chewer. The tumor was cleared after six treatments of combined topical ALA-PDT and cryogun cryotherapy. No recurrence of the lesion was found after a follow-up period of 18 months. We suggest that our combined treatment protocol may be effective in treating OVH lesions. The treatment course may be slightly shortened with this combined protocol and was well tolerated by the patient. Copyright (C) 2012, Association

for Dental Sciences find more of the Republic of China. Published by Elsevier Taiwan LLC. All rights reserved.”
“Three new salicylidene Schiff base nickel(II) complexes [Ni(L-1)(CH3COOH)(2)](2) (1), [Ni-2(L-1)(2)(CH3OH)] (2), [Ni(L-2)(2)]center dot 3H(2)O (3) wiki were synthesized and characterized fully by structural, analytical, and spectral methods. The single-crystal X-ray structures of complexes 1 and 2 exhibit the symmetrical ligands coordinated to the nickel(II) ion in a tetradentate fashion via ONNO donor atoms, while the unsymmetrical ligand L-2 presented a ONO tridentate coordination mode in complex 3. The nickel(II) ions lie in the six-coordinated octahedral environment for the mononuclear complexes 1 and 3, along

with dinuclear complex 2. The interaction of the complexes with calf thymus DNA (CT-DNA) has been explored by absorption and emission titration methods, which revealed that complexes 1-3 could interact with CT-DNA through intercalation. The interactions of the complexes with bovine serum albumin (BSA) were also investigated using UV-Vis, fluorescence and synchronous fluorescence spectroscopic methods. The results indicated that all of the complexes could quench the intrinsic fluorescence of BSA in a static quenching process. Further, the in vitro cytotoxic effect of the complexes examined on cancerous cell lines such as human lung carcinoma cell line (A549), human colon carcinoma cell lines (HCT-116), human promyelocytic leukemia cells (HL-60) and colonic cancer cell line Caco-2 showed that all three complexes exhibited substantial cytotoxic activity. (C) 2014 Elsevier Inc. All rights reserved.

Lemons (Citrus limon, cv.Limoneira 8A) were harvested in winter months (June to August), treated with 0.43W m(-2) (22 kJ m(-2) d(-1) UV-BBE) of UV-B radiation during 0 (control), 0.5, 1.0, 2.0, 3.0, and 5.0 min, and then stored at 25 degrees C for 24 h. Peel samples from irradiated areas were obtained with MAPK inhibitor a razor blade and frozen in liquid nitrogen until use for measurements. Data obtained showed that 2 and 3 min of UV-B exposure effectively increased

the level of UV-B absorbing compounds and total phenolics in flavedo without causing visual alterations of the peel colour as compared with non-irradiated lemons. By contrast, there were no significant changes in albedo secondary metabolite accumulation. The amount of secondary metabolites was depending upon UV-B time-dose. Exposure over 3.0 min did not further improve the accumulation of UV-B absorbing and phenolic compounds. Soluble sugars (sucrose, glucose and fructose) also accumulated in the lemon peel after UV-B exposure, but the distribution patterns were different. After

3 min time-dose, sucrose and hexoses increased in flavedo, whereas in albedo only increased the sucrose and glucose. This effect was related to UVB-induced changes in the activity of sucrose-hydrolyzing and sucrose-synthesizing 3MA enzymes: soluble and cell-bound invertase, sucrose synthase (SS) and sucrose phosphate synthase (SPS). Data indicate that lemon peel retains the capacity to modify the enzyme activity of sucrose metabolism in response to UV-B exposure. Our results also suggest that the exposure of postharvest lemons to low supplemental UV-B doses produces changes Selleck Temsirolimus in the carbon allocation of peel tissues including synthesis, but probably not only limited to them, of UV-B absorbing and phenolic compounds. (C) 2010 Elsevier B.V. All rights reserved.”
“Nodular hidradenoma or clear cell hidradenoma is a rare skin adenexal tumor which arises from eccrine sweat glands. Skin adenexal tumors situated in the breast parenchyma are still very

rare and is one of the differential diagnoses of breast tumors. Failure to identify its morphologic features may lead to a mistaken diagnosis and over treatment. We report a case of breast lump, in a 40-year-old lady, which was diagnosed clinically as a malignant breast lump. Final diagnosis of nodular hidradenoma was made only after excision biopsy as. ne needle aspiration cytology was inconclusive.”
“Malignant fibrous histiocytoma (MFH) is rare in the chest wall, particularly in patients who have undergone radiotherapy for primary nasopharyngeal cancer. In the present study, a case of MFH of the upper chest wall that appeared four years after initial radiotherapy for squamous cell carcinoma of the nasopharynx is reported.

The factor most strongly related to the physicians’ use of genetic testing was patients requests for breast (odds ratio = 12.65; 95% confidence interval 7.77-20.59) or colorectal cancer tests (odds ratio = 7.02; 95% confidence interval 3.61-13.64). A high level of

interest for specific training was reported by almost all physicians surveyed.\n\nConclusions. Targeted educational programs are needed to improve the expertise of physicians, and, ultimately, to enhance the appropriate use of genetic tests in clinical practice. (C) 2013 The Authors. Published by Elsevier Inc. All rights reserved.”
“Background: Vorinostat In 1996, all colorectal surgery in the county of Vastmanland, Sweden, was centralized to the central District Hospital in Vasteras. A Colorectal Unit was established and modern surgical procedures were introduced. The aim of this study was to analyze the outcome for patients treated surgically for distal sigmoid colonic cancer before and after the centralization. Methods: Hospital records of all patients with distal sigmoid colonic cancer, treated between 19911995, group 1 (n

= 64), and 1996-2000, group 2 (n = 82), were studied retrospectively. Results: In SRT1720 Epigenetics inhibitor group 2, there were fewer reoperations (n = 0) than in group 1 (n = 6; p = 0.005) and the postoperative mortality was lower; one in group 2 compared with five in group 1 (p = 0.047). The amount of lymph nodes examined were

higher and the length of distal surgical margin longer in group 2. Curatively treated patients in group 2 had better overall survival compared to group 1 (RR 0.56; 95% CI 0.34-0.93). Conclusion: Centralization of colorectal surgery resulted in an improvement of pathologic specimens and a decrease in postoperative reoperations and mortality in patients treated surgically for distal sigmoid colonic cancer. Moreover, the overall survival of curatively LCL161 datasheet treated patients was improved. Copyright (C) 2009 S. Karger AG, Basel”
“Breast reconstruction after mastectomy positively affects psychosocial well-being; however, the influence of reconstruction on cancer outcomes is unknown. The objective of our study was to compare survival in reconstructed versus nonreconstructed patients after mastectomy. All consecutive female patients diagnosed with invasive breast cancer and treated with mastectomy between 2002 and 2011 were identified from our single-institution database. All cancer operations were performed by two surgeons. Survival was calculated using the Kaplan-Meier method and compared using the log-rank test. To identify the effect of reconstruction on survival, a multivariate Cox regression analysis was performed. Of 474 patients treated, 340 (71.7%) underwent breast reconstruction. At a mean follow-up 3.3 years, reconstructed patients had a longer 5-year survival (91 vs 74%, P smaller than 0.001).

For rs7528684, a significantly increased prevalence of the AA genotype and A allele in AR patients was recorded. The frequency of the GG genotype and G allele of rs10489678 was markedly higher in AR patients than those in controls. For rs7522061, a higher frequency of the TT genotype, and a lower frequency of the CT genotype were found in AR patients. https://www.selleckchem.com/products/ABT-737.html Concerning rs945635, a lower frequency of the CC genotype, and a higher

frequency of G allele were observed in AR patients. According to the analysis of the three strong positive SNPs, the haplotype of AGT increased significantly in AR cases (AR = 38.8%, Controls = 24.3%, P = 8.29×10-14, OR [95% CI] 1.978 [1.652 similar to 2.368]). Conclusions This study found a significant association between the SNPs in FCRL3 gene and AR in Chinese Han patients. The results suggest these gene polymorphisms might be the autoimmunity risk for AR.”
“The mechanistic links between genetic variation and autoantibody production in autoimmune disease remain obscure. Autoimmune lymphoproliferative syndrome (ALPS) is caused by inactivating mutations in FAS or FASL, with autoantibodies thought to arise through failure of FAS-mediated removal of self-reactive germinal center (GC) B cells. Here we show that FAS is in fact not required for this process. Instead, GSK126 FAS inactivation led to accumulation of

a population of unconventional GC B cells that underwent somatic hypermutation, survived despite

losing antigen reactivity, and differentiated into a large population of plasma cells that included autoantibody-secreting clones. IgE(+) plasma cell numbers, in particular, increased after FAS inactivation Blebbistatin and a major cohort of ALPS-affected patients were found to have hyper-IgE. We propose that these previously unidentified cells, designated “rogue GC B cells,” are a major driver of autoantibody production and provide a mechanistic explanation for the linked production of IgE and autoantibodies in autoimmune disease.”
“Synapses that sustain neurotransmitter release at high rates often contain special presynaptic cytosolic projections (PCPs) that are believed to facilitate synaptic vesicle (SV) movements to the sites of fusion. The genetically modifiable Drosophila neuromuscular junction (NMJ) serves as one of the model systems to investigate the functions of these structures. Using electron microscope tomography we determined the three-dimensional organization of the Drosophila PCP immobilized by high-pressure freezing, followed by cryo-substitution. We show that it is composed of three structural components: (1) the central core, (2) legs, organized in a regular grid at the bottom of the central core, and (3) cytoplasmic extensions. The extensions are comprised of thin filaments emerging from the central core.

\n\nCONCLUSION: The findings suggest that

thigh SAT and IMF serve as insulation against propagation of current during PFTα cost surface NMES applications in individuals with SCI.”
“Aim Owing to their role as insect predators, web-building spiders can be important biological control agents within agricultural systems. In complex tropical agroecosystems such as agroforests, management determines plant architecture, vegetation composition and associated ant density, but little is known on how these attributes, together with landscape context, determine spider web density. We hypothesized that all three spatial scales and the presence of Philidris ants significantly contribute to the explanation of spider web density SNX-5422 clinical trial with web types being differently affected.\n\nLocation In 42 differently managed cacao agroforestry systems in Sulawesi, Indonesia.\n\nMethods We surveyed the distribution of five spider-web types on 420 cacao trees to determine how these relate to habitat variables and a numerically dominant

ant species at three different spatial scales, comparing tree, plot and landscape features. We fitted linear mixed-effects model, selected the best model subset using information-theoretic criteria and calculated the model-averaged estimates. We used non-metric multidimensional scaling (NMDS) to determine and visualize guild level responses to the effects of the tree, plot and landscape-scale variables.\n\nResults The five spider guilds preferred different features of cacao tree architecture. Most frequently recorded webs belonged to the line-and orb-web type. At the tree scale, overall web density was positively related to canopy openness. At the plot scale, a higher number of shade trees was related to a higher web density. At the landscape scale, the altitude determined the distribution patterns of web-building spiders. Presence of Philidris ants was positively associated with density of orb webs, while no pattern was found for other web types.\n\nMain conclusions Results suggest spider web density could be increased

by pruning CP-868596 of cacao trees while keeping shade trees at high density in cacao plots. The results emphasize the need to consider scale dependency of crop management and web-guild-specific responses that may be related to different functional roles of spiders as a high-density predator group in agroforestry.”
“The budding yeast Saccharomyces cerevisiae is characterized by asymmetric cell division and the asymmetric inheritance of spindle components during normal vegetative growth and during certain specialized cell divisions. There has been a longstanding interest in the possibility that yeast chromosomes segregate non-randomly during mitosis and that some of the differences between mother and daughter cells could be explained by selective chromatid segregation. This review traces the history of the experiments to determine if there is biased chromatid segregation in yeast.