[Cytological study of the nucleolus organizer regions in the chromosomes of CBA and C57BL mice and their hybrids].
Transcriptionally active NORs of chromosomes visualized by AgNO3 staining were studied in bone marrow and embryos (day 10 of gestation) of CBA and C57BL mice, as well as of (CBA x C57BL)F1 hybrids. These mouse strains were shown to differ by the average number of Ag-positive NORs in marrow cells; in hybrids, the number of NORs is greater than in the parent strains. During embryogenesis, the number of chromosomes carrying silver-stained NORs increases; however, no significant differences by this parameter was detected between hybrid and C57BL embryos. The average number of silver-stained NORs was the smallest in embryos of CBA mice.
Patkin
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EL
Kustova
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ME
Dyban
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AP
D000818:Animals; D001853:Bone Marrow / Q000648:ultrastructure; D002875:Chromosomes / Q000648:ultrastructure*; D003433:Crosses, Genetic; D005260:Female; D008297:Male; D008677:Metaphase; D051379:Mice; D008810:Mice, Inbred C57BL / Q000196:embryology*; D008808:Mice, Inbred CBA / Q000196:embryology*; D009697:Nucleolus Organizer Region / Q000648:ultrastructure*; D016622:Silver Staining / Q000379:methods; D013045:Species Specificity
Tsitologicheskoe issledovanie iadryshkoorganizuiushchikh raĭonov khromosom u mysheĭ linii CBA, C57BL i ikh gibridov.