Results 31 to 40 of about 26,767 (249)

Retinoic Acid Is Sufficient for the In Vitro Induction of Mouse Spermatocytes

open access: yesStem Cell Reports, 2016
Meiosis is the key step in gametogenesis. However, the mechanism of mammalian meiosis remains poorly understood due to the lack of an in vitro model. Here, we report that retinoic acid (RA) is sufficient for inducing leptotene/zygotene spermatocytes from
Si Wang   +14 more
doaj   +1 more source

spermatocytes – A unique and advantageous cell for studying meiosis [PDF]

open access: yes, 2013
Mesostoma ehrenbergii have a unique male meiosis: their spermatocytes have three large bivalents that oscillate for 1-2 hours before entering into anaphase without having formed a metaphase plate, have a precocious (“pre-anaphase”)
Ferraro-Gideon, Jessica   +5 more
core   +1 more source

Nucleolar structure in drosophila spermatocytes

open access: yes, 1973
5 p.-7 fig.The present study deals with the nucleolar structure in primary spermatocytes of some Drosophila species. The nucleoli in living spermatocytes show a dark area (basophilic area, composed by "pars granulosa") attached to the nuclear envelope ...
Stockert, Juan Carlos, Esponda, Pedro
core   +1 more source

Endosomal volume measurement for various Rab mutant spermatocytes during cytokinesis.

open access: yes, 2022
Spermatocytes from all backgrounds were treated with PlyA2-mCherry and imaged live to capture cytokinetic step. Endosome surfaces in 3D images were traced using surfaces tool in Imaris software by setting up appropriate thresholds.
Daniel Blankenberg (8997360)   +11 more
core   +1 more source

Spermatogenesis disorders in sterlet (Acipenser ruthenus Linnaeus, 1758) in water area of the Kakhovka Reservoir

open access: yesRibogospodarsʹka Nauka Ukraïni
Purpose. To conduct histological studies of sterlet spermatogenesis in technogenic conditions. To determine the level of reproductive system disorders, to identify possible causes of abnormalities.
М. Koziy
doaj   +1 more source

Crossover frequencies in spermatocytes of Robertsonian homozygotes and heterozygotes of Mus musculus domesticus [PDF]

open access: yesGenetics and Molecular Biology
Crossovers (COs) generate genetic diversity and proper homologous chromosome segregation during meiosis. Mus musculus domesticus, with a diploid number of 2n=40, has 19 autosomal pairs plus one sex chromosome pair all of which are telocentric chromosomes.
Eliana Ayarza   +3 more
doaj   +1 more source

Transcriptional Inhibition of lncRNA gadd7 by CRISPR/dCas9-KRAB Protects Spermatocyte Viability

open access: yesFrontiers in Molecular Biosciences, 2021
Our previous study found that lncRNA gadd7 was up-regulated in the semen of varicocele patients, and could promote the apoptosis of mouse spermatocytes and inhibit their proliferation.
Jun Zhao   +7 more
doaj   +1 more source

SAM68 co-immunoprecipitates with MVH in secondary spermatocytes.

open access: yes, 2013
(A) Total extract from secondary spermatocytes were immunoprecipitated with an anti-SAM68 antibody and analysed in Westeern blot with anti-MVH and anti-Sam68 antibodies.
Oliver Meikar (202340)   +6 more
core   +1 more source

The role of tyrosine phosphatase Shp2 in spermatogonial differentiation and spermatocyte meiosis

open access: yesAsian Journal of Andrology, 2020
The transition from spermatogonia to spermatocytes and the initiation of meiosis are key steps in spermatogenesis and are precisely regulated by a plethora of proteins. However, the underlying molecular mechanism remains largely unknown.
Yang Li   +11 more
doaj   +1 more source

Localization of exocyst complex proteins in dividing spermatocytes.

open access: yes, 2015
(A) Localization of Sec8 protein in wild-type primary spermatocytes. Interphase and dividing spermatocytes were stained for Tubulin (green), Sec8 (red) and DNA (blue). During interphase, Sec8 was mostly diffuse in the cytoplasm and enriched at the plasma
Dinah Loerke (169029)   +10 more
core   +1 more source

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