title: [Linear differentiation of the X-chromosomes of the field vole Microtus agrestis].
abstract: Morphology of the fibroblasts X-chromosomes obtained from the female field vole Microtus agrestis and cultured for 4--5 hr before fixation in 5-bromodeoxyuridine, was studied. A clear differential condensation along the lenght of the whole X-chromosome was observed. A difference between homologues in the degree of uneven condensation was noted both in the short arm (facultative heterochromatin) and in the long arm (constitutive heterochromatin).
mesh_terms: D000818:Animals; D001973:Bromodeoxyuridine / Q000494:pharmacology; D005260:Female; D005347:Fibroblasts; D006570:Heterochromatin; D066298:In Vitro Techniques; D008938:Mitosis / Q000187:drug effects; D012377:Rodentia; D012730:Sex Chromosomes / Q000648:ultrastructure*; D013936:Thymidine; D014316:Tritium
chemical_list: D006570:Heterochromatin; D014316:Tritium; D001973:Bromodeoxyuridine; D013936:Thymidine
vernacular_title: Lineĭnaia differentsirovannost' X-khromosom pashennoĭ polevki Microtus agrestis