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72 results for “spermatocyte”
Рис. 8. СреЗы череЗ гонады моллюска: А – поперечный среЗ череЗ гонаду самки, Б–Д – фолликулы в гонадах самок (Б, В – Зрелые ооциты круглой формы, готовые к вымету; Г – ооциты в период активного гаметогенеЗа на стадии раннего трофоплаЗматического роста, Д – ооциты каплевидной формы в период преднерестовой стадии при ЗаверШении трофоплаЗматического роста), Е, Ж – поперечные среЗы череЗ гонаду самца, З, И – ацинусы в гонадах самцов (З – преднерестоваЯ стадиЯ, просветы в ацинусах практически отсутствуют, стенки ацинусов не раЗличимы, И – нерестоваЯ стадиЯ, имеютсЯ просветы в ацинусах). МасШтабные линейки 300 мкм (А), 200 мкм (Е), 100 мкм (Ж), 50 мкм (Б–Д, З, И). вя – вакуолиЗированное Ядро, сф – стенка фолликула, вм – вителлиноваЯ мембрана, РО – раЗвиваюЩиесЯ иЗ пелликулы ооциты, пг – ресничный проток гонады, с – сперматоциты, па – просветы в ацинусах. Fig. 8. Sections through the gonads of the mollusk: А – transverse section through the female gonad, Б–Д – ovarian acini, follicles (Б, В – mature round-shaped oocytes ready to be swept out; Г – oocytes in the period of active gametogenesis at the stage of early trophoplasmatic growth, Д – tear-shaped oocytes during the pre-spawning stage at the end of trophoplasmatic growth), Е, Ж – transverse sections through the male gonads, З, И – testicular acini (З – pre-spawning stage, with practically absent gaps in the acini and invisible the acini walls, И – spawning stage, with gaps in the acini). Scale bars 300 µm (A), 200 µm (E), 100 µm (Ж), 50 µm (Б–Д, З, И). вя – vacuolated nucleus, сф – follicle wall, вм – vitelline membrane, РО – developing oocytes arising from a pellicle, пг – ciliated gonadal duct, с – spermatocytes, па – gaps in acini. in Nodularia vladivostokensis (Bivalvia: Unionidae) from Razdolnaya River (Primorye, Russia)
Рис. 8. СреЗы череЗ гонады моллюска: А – поперечный среЗ череЗ гонаду самки, Б–Д – фолликулы в гонадах самок (Б, В – Зрелые ооциты круглой формы, готовые к вымету; Г – ооциты в период активного гаметогенеЗа на стадии раннего трофоплаЗматического роста, Д – ооциты каплевидной формы в период преднерестовой стадии при ЗаверШении трофоплаЗматического роста), Е, Ж – поперечные среЗы череЗ гонаду самца, З, И – ацинусы в гонадах самцов (З – преднерестоваЯ стадиЯ, просветы в ацинусах практически отсутствуют, стенки ацинусов не раЗличимы, И – нерестоваЯ стадиЯ, имеютсЯ просветы в ацинусах). МасШтабные линейки 300 мкм (А), 200 мкм (Е), 100 мкм (Ж), 50 мкм (Б–Д, З, И). вя – вакуолиЗированное Ядро, сф – стенка фолликула, вм – вителлиноваЯ мембрана, РО – раЗвиваюЩиесЯ иЗ пелликулы ооциты, пг – ресничный проток гонады, с – сперматоциты, па – просветы в ацинусах. Fig. 8. Sections through the gonads of the mollusk: А – transverse section through the female gonad, Б–Д – ovarian acini, follicles (Б, В – mature round-shaped oocytes ready to be swept out; Г – oocytes in the period of active gametogenesis at the stage of early trophoplasmatic growth, Д – tear-shaped oocytes during the pre-spawning stage at the end of trophoplasmatic growth), Е, Ж – transverse sections through the male gonads, З, И – testicular acini (З – pre-spawning stage, with practically absent gaps in the acini and invisible the acini walls, И – spawning stage, with gaps in the acini). Scale bars 300 µm (A), 200 µm (E), 100 µm (Ж), 50 µm (Б–Д, З, И). вя – vacuolated nucleus, сф – follicle wall, вм – vitelline membrane, РО – developing oocytes arising from a pellicle, пг – ciliated gonadal duct, с – spermatocytes, па – gaps in acini.
Phase contrast images of Hierodula membranacea spermatocytes in metaphase I
<p>These are phase contrast images of <em>Hierodula membranacea</em> primary spermatocytes. For each image, 608 px=10 µm.</p>
Phase contrast images of Hierodula membranacea spermatocytes in metaphase I
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Recombination study by MLH1 immunostaining of mouse spermatocytes after dietary treatments
<p>Meiotic recombination is a critical process for sexually reproducing organisms. This exchange of genetic information between homologous chromosomes during meiosis is important not only because it generates genetic diversity, but also because it is often required for proper chromosome segregation. Consequently, the frequency and distribution of crossovers are tightly controlled to ensure fertility and offspring viability. However, in many systems it has been shown that environmental factors can alter the frequency of crossover events. We have explored for the first time the effect of dietary changes on crossover frequency per nucleus. Our study was performed in spermatocytes of 3 mouse inbred strains by analyzing the number and position of crossovers along the synaptonemal complexes, as well as the length of such synaptonemal complexes, by immunostaining with antibodies against MLH1 (which allows the identification of the crossover sites) and SYCP3 (a component of the synaptonemal complex). Our results show that male recombination rate is sensitive to dietary changes, and this sensitivity depends on the genetic background in mice. This is first to report a nutrition effect on genome-wide levels of recombination.</p>
Statistics and quantification dataset of Haspin and its related proteins analysis in mouse spermatocytes
<p><span>Chromosome segregation requires that centromeres properly attach to spindle microtubules. This essential step regulates the accuracy of cell division and therefore must be precisely regulated. One of the main centromeric regulatory signaling pathways is the Haspin-H3T3ph-</span><span>chromosomal passenger complex (</span><span>CPC) cascade, which is responsible for the recruitment of the</span><span> CPC to the centromeres</span><span>. In mitosis, Haspin kinase phosphorylates histone H3 at threonine 3 (H3T3ph), an essential epigenetic mark that recruits the CPC, whose catalytic component is Aurora B kinase. However, the centromeric Haspin-H3T3ph-CPC pathway remains largely uncharacterized in mammalian male meiosis. We have analyzed Haspin functions by either its chemical inhibition in cultured spermatocytes using LDN-192960, or the ablation of <em>Haspin</em> gene in <em>Haspin-/-</em>. Our studies suggest that Haspin kinase activity is required for proper chromosome congression during both meiotic divisions and for the recruitment of Aurora B and kinesin MCAK to meiotic centromeres. However, the absence of H3T3ph histone mark does not alter Borealin and SGO2 centromeric localization. These results add new and relevant information regarding the regulation of the Haspin-H3T3ph-CPC pathway and centromere function during meiosis. </span></p>
The Effect of Low Electrical Current on Testicular Spermatocyte Count
ClinicalTrials.gov study NCT02617173. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Recombination study by MLH1 immunostaining of mouse spermatocytes after dietary treatments
Open the record for dataset details and reuse information.
Statistics and quantification dataset of Haspin and its related proteins analysis in mouse spermatocytes
Open the record for dataset details and reuse information.
Zfy genes are required for efficient meiotic sex chromosome inactivation (MSCI) in spermatocytes
GEO Series GSE87598. Mus musculus. 8 samples. Type: Expression profiling by array.
Regulatory complexity revealed by integrated cytological and RNA-seq analyses of meiotic substages in mouse spermatocytes
GEO Series GSE72833. Mus musculus. 32 samples. Type: Expression profiling by high throughput sequencing.
Transcriptomics reveals the cytotoxicity of PM2.5 to mouse spermatocyte-derived GC-2spd cells
GEO Series GSE189187. Mus musculus. 6 samples. Type: Expression profiling by high throughput sequencing.
Genome-wide analysis of Dnmt3L heterozygous and wildtype spermatocytes and spermatids
GEO Series GSE20241. Mus musculus. 11 samples. Type: Expression profiling by array.
Small RNA profiles of mouse leptotene/zygotene spermatocytes at postnatal day 11 and 16.
GEO Series GSE200853. Mus musculus. 2 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Next Generation Sequencing Facilitates Quantitative Analysis of PHB-knockdown and PHB-knockout Spermatocytes Transcriptomes
GEO Series GSE140346. Mus musculus. 12 samples. Type: Expression profiling by high throughput sequencing.
Genome-wide map of H3K4me3 and PRDM9-binding in 12 day post-partum mouse spermatocytes
GEO Series GSE60906. Mus musculus. 26 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
TDRD6 mediates early steps of spliceosome maturation in primary spermatocytes
GEO Series GSE94791. Mus musculus. 4 samples. Type: Expression profiling by high throughput sequencing.
Expression analysis of Baz1a-deficient spermatocytes and spermatids
GEO Series GSE41303. Mus musculus. 12 samples. Type: Expression profiling by array.
Transcriptome analysis in mouse late spermatocyte deficient in pachytene piRNAs (MIWI-immunoprecipitated RNAs)
GEO Series GSE62416. Mus musculus. 12 samples. Type: Other.
In situ transcriptomic analysis of spermatocytes in non-obstructive azoospermia reveals senescence-like states in arrested spermatocytes
GEO Series GSE238078. Homo sapiens. 18 samples. Type: Expression profiling by high throughput sequencing.
Transcriptome analysis in mouse late spermatocyte deficient in pachytene piRNAs (Mov10l1 fl/+ and Mov10l1 s fl/-)
GEO Series GSE43735. Mus musculus. 6 samples. Type: Expression profiling by high throughput sequencing.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.