Results 1 to 10 of about 60,046 (266)

Degenerated, Undifferentiated, Rearranged, Lost: High Variability of Sex Chromosomes in Geometridae (Lepidoptera) Identified by Sex Chromatin [PDF]

open access: yesCells, 2021
Sex chromatin is a conspicuous body that occurs in polyploid nuclei of most lepidopteran females and consists of numerous copies of the W sex chromosome.
Martina Hejníčková   +7 more
doaj   +2 more sources

The epigenome of evolving Drosophila neo-sex chromosomes: dosage compensation and heterochromatin formation. [PDF]

open access: yesPLoS Biology, 2013
Sex chromosomes originated from autosomes but have evolved a highly specialized chromatin structure. Drosophila Y chromosomes are composed entirely of silent heterochromatin, while male X chromosomes have highly accessible chromatin and are ...
Qi Zhou   +5 more
doaj   +2 more sources

A ROLE FOR CELLULAR IMMUNITY IN EARLY POSTPARTUM PERIOD

open access: yesМедицинская иммунология, 2021
The functioning of the secretory organs is closely related to the activity of the immune system. As is well known, this participation is manifested in the fact that at certain stages of activity, the lymphoid cells migrating to the organ can be involved ...
N. A. Panova, V. G. Skopichev
doaj   +1 more source

Correlation between Sex Chromatin and Female Breast Tumour in Paraffin Sections, Buccal Smears and Peripheral Blood Films [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2014
Introduction: Sex chromatin is a plano-convex to triangular DNA mass measuring approximately 1µm in size and lying adjacent to the inner side of nuclear membrane in the somatic cells of the females.
Bodal Vijay Kumar   +7 more
doaj   +1 more source

Plasma growth hormone pulses induce male-biased pulsatile chromatin opening and epigenetic regulation in adult mouse liver

open access: yeseLife, 2023
Sex differences in plasma growth hormone (GH) profiles, pulsatile in males and persistent in females, regulate sex differences in hepatic STAT5 activation linked to sex differences in gene expression and liver disease susceptibility, but little is ...
Andy Rampersaud   +2 more
doaj   +1 more source

A mammal-specific Doublesex homolog associates with male sex chromatin and is required for male meiosis. [PDF]

open access: yesPLoS Genetics, 2007
Gametogenesis is a sexually dimorphic process requiring profound differences in germ cell differentiation between the sexes. In mammals, the presence of heteromorphic sex chromosomes in males creates additional sex-specific challenges, including ...
Shinseog Kim   +6 more
doaj   +1 more source

H3K27ac chromatin acetylation and gene expression analysis reveal sex- and situs-related differences in developing chicken gonads

open access: yesBiology of Sex Differences, 2022
Background Birds exhibit a unique asymmetry in terms of gonad development. The female left gonad generates a functional ovary, whereas the right gonad regresses. In males, both left and right gonads would develop into testes.
Yunqi Jiang   +7 more
doaj   +1 more source

RANK signaling in osteoclast precursors results in a more permissive epigenetic landscape and sexually divergent patterns of gene expression [PDF]

open access: yesPeerJ, 2023
Background Sex is an important risk factor in the development of osteoporosis and other bone loss disorders, with women often demonstrating greater susceptibility than men. While variation in sex steroids, such as estradiol, accounts for much of the risk,
Abigail L. Keever   +4 more
doaj   +2 more sources

Ancestral Chromatin Configuration Constrains Chromatin Evolution on Differentiating Sex Chromosomes in Drosophila. [PDF]

open access: yesPLoS Genetics, 2015
Sex chromosomes evolve distinctive types of chromatin from a pair of ancestral autosomes that are usually euchromatic. In Drosophila, the dosage-compensated X becomes enriched for hyperactive chromatin in males (mediated by H4K16ac), while the Y ...
Qi Zhou, Doris Bachtrog
doaj   +1 more source

Tight basis cycle representatives for persistent homology of large data sets [PDF]

open access: yes, 2022
Persistent homology (PH) is a popular tool for topological data analysis that has found applications across diverse areas of research. It provides a rigorous method to compute robust topological features in discrete experimental observations that often contain various sources of uncertainties.
arxiv   +1 more source

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