Results 1 to 10 of about 11,144,846 (357)

Phase transitioned nuclear Oskar promotes cell division of Drosophila primordial germ cells

open access: yeseLife, 2018
Germ granules are non-membranous ribonucleoprotein granules deemed the hubs for post-transcriptional gene regulation and functionally linked to germ cell fate across species.
Kathryn E Kistler   +7 more
doaj   +2 more sources

Germ cell specification. [PDF]

open access: yesAdvances in Experimental Medicine and Biology, 2013
The germline of Caenorhabditis elegans derives from a single founder cell, the germline blastomere P(4). P(4) is the product of four asymmetric cleavages that divide the zygote into distinct somatic and germline (P) lineages. P(4) inherits a specialized cytoplasm ("germ plasm") containing maternally encoded proteins and RNAs.
Jennifer T. Wang, G. Seydoux
semanticscholar   +3 more sources

Evidence against a germ plasm in the milkweed bug Oncopeltus fasciatus, a hemimetabolous insect [PDF]

open access: yesBiology Open, 2013
Summary Primordial germ cell (PGC) formation in holometabolous insects like Drosophila melanogaster relies on maternally synthesised germ cell determinants that are asymmetrically localised to the oocyte posterior cortex.
Ben Ewen-Campen   +2 more
doaj   +6 more sources

Spermatocytic tumor – case report [PDF]

open access: yesLiječnički vjesnik, 2021
According to the newest WHO classification tumors of the testis are divided into germ cell tumors derived from germ cell neoplasia in situ, germ cell tumors unrelated to germ cell neoplasia in situ, sex cord-stromal tumors, tumors containing both germ ...
Tonći Vodopić   +5 more
doaj   +1 more source

In vitro production of viable eggs from isolated mouse primary follicles by successive culture

open access: yesThe Journal of Reproduction and Development, 2021
To produce viable eggs from single primary follicles in vitro, primary follicles containing oocytes (average 39.0 ± 0.2 µm in diameter) were isolated from the ovaries of 1-week-old mice, and cultured in combination with culture membranes for the first 8 ...
Tomohiro KOHAMA   +3 more
doaj   +1 more source

Temperature sensitivity of DNA double-strand break repair underpins heat-induced meiotic failure in mouse spermatogenesis

open access: yesCommunications Biology, 2022
High temperatures lead to DNA double-strand break accumulation and asynapsis that trigger the meiotic checkpoint and apoptosis of spermatocytes in ex vivo cultures, providing a rationale for the heat sensitivity of sperm production in mammals.
Kodai Hirano   +7 more
doaj   +1 more source

Rat PRDM9 shapes recombination landscapes, duration of meiosis, gametogenesis, and age of fertility

open access: yesBMC Biology, 2021
Background Vertebrate meiotic recombination events are concentrated in regions (hotspots) that display open chromatin marks, such as trimethylation of lysines 4 and 36 of histone 3 (H3K4me3 and H3K36me3).
Ondrej Mihola   +17 more
doaj   +1 more source

Synchronous Primary Parosteal Osteosarcoma and Primary Mediastinal Germ Cell Tumour with Atypical Mycobacterial Infection – A Rare Phenomenon: A Case Report [PDF]

open access: yesMalaysian Orthopaedic Journal, 2023
Mediastinal germ cell tumours are a rare group of extragonadal germ cell tumours with less than 5% prevalence of all germ cell tumours. Primary mediastinal germ cell tumours themselves account for 16-36% of the extragonadal germ cell tumours. Along the
Lim CH   +4 more
doaj   +1 more source

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