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  • premeiotic
  • Because the mutant spermatocytes (1) underwent premeiotic DNA replication, (2) displayed cytological features attesting initiation of recombination and of axial-element assembly, and (3) expressed Spo11 and numerous other meiotic genes, it was concluded that STRA8 is dispensable for meiotic initiation. (semanticscholar.org)
  • spindle
  • In grasshopper spermatocytes, the dynein heavy chain antibody localizes to the spindle, spindle poles, and kinetochores (Fig. 2). (nih.gov)
  • immunofluorescence
  • Titin, the giant elastic protein found in muscles, is present in spindles of crane-fly and locust spermatocytes as determined by immunofluorescence staining using three antibodies, each raised against a different, spatially separated fragment of Drosophila titin (D-titin). (biologists.org)
  • ortholog
  • Our results identify the spatially restricted function of a PRDM9 ortholog in spermatocyte transcription and we propose that the spatial organization of chromatin factors might be a conserved mechanism in tissue-specific control of transcription. (mit.edu)
  • The level of ofs expression in spermatocytes is much higher than for the known eIF4G ortholog (known as eIF-4G or eIF4G), suggesting that Ofs substitutes for this protein. (biologists.org)
  • divide
  • Awdough spermatocytes dat divide mitoticawwy and meioticawwy are sensitive to radiation and cancer , spermatogoniaw stem cewws are not. (appspot.com)
  • spatial
  • We used antibodies against human Rad51 to examine the temporal and spatial distribution of Rad51 in the spermatocytes of the common shrew Sorex araneus (Eulipotyphla, Soricidae). (msu.ru)
  • chromosomal domains
  • Undoubtedly the emergence of Rb chromosomes changes the ancestral nuclear architecture of 2n = 40 spermatocytes since they establish new types of interactions among chromosomal domains, particularly through centromeric and heterochromatic regions at the nuclear periphery among telocentric and at the nuclear center among Rb metacentric ones. (biomedcentral.com)
  • spreads
  • Synaptonemal complexes of the common shrew Sorex araneus L. in spermatocyte spreads // Cytogenetics and Cell Genetics. (msu.ru)
  • mice
  • Tables 1 and 2 represent the genotoxic effect of chlorpyrifos, atdifferent doses, on bone marrow cells and spermatocytes of male mice and they also show the role of lettuce leaves against the genotoxicity of chlorpyrifos in all examined cells. (thefreedictionary.com)
  • In this study we analyse the synaptic configuration of the quadrivalents formed in the meiotic pro- phase of spermatocytes of mice double heterozygotes for the dependent Rb chromosomes: Rbs 11.16 and 16.17. (conicyt.cl)
  • transcription
  • SET-1 7 is concentrated in stable, chromatin-associated nuclear foci at actively transcribed gene clusters, which we term spermatocyte transcription bodies. (mit.edu)
  • Because there is little, if any, transcription after the G 2 -M transition in flies ( Olivieri and Olivieri, 1965 ), spermatocytes must delay meiotic division until all the necessary transcripts have accumulated. (biologists.org)
  • results
  • The results show a relatively uniform quantity of breaks from 25-33°C with a threshold increase in the number of breaks happening at 34°C. Additional DSBs were induced at heat shock temperatures above 34°C. These results indicate that spermatocytes are extremely sensitive to a slight fluctuation in temperature and that deviation from a narrow isotherm leads to the induction of an abundance of DNA damage. (uoregon.edu)