title: [Quantitative characteristics of heterochromatin regions in human metaphase chromosomes at different stages of ontogenesis].
abstract: The comparative study of C-heterochromatic regions has been provided for 1, 9, 16 and Y chromosomes of 30 human embryonal in vivo lymphocytes of 6-8 gestational weeks (obtained with medical abortions), on the one hand, and in vitro lymphocytes of 100 phenotypically normal newborns, on the other hand. According to the results the heterochromatic regions of 1, 9 and Y are significantly shorter in embryonal chromosomes as compared with lymphocytes of newborns.
authors.forename: G R
authors.initials: GR
authors.lastname: Akopian
authors.forename: O O
authors.initials: OO
authors.lastname: Sozans'kyĭ
authors.forename: Iu ĭ
authors.initials: Iuĭ
authors.lastname: Gavryliuk
mesh_terms: D002878:Chromosomes, Human, Pair 1; D002885:Chromosomes, Human, Pair 16; D002899:Chromosomes, Human, Pair 9; D005314:Embryonic and Fetal Development / Q000235:genetics*; D005865:Gestational Age; D006570:Heterochromatin / Q000648:ultrastructure*; D006801:Humans; D007231:Infant, Newborn / Q000502:physiology*; D008214:Lymphocytes / Q000502:physiology; D008677:Metaphase / Q000235:genetics*; D010641:Phenotype; D014998:Y Chromosome
chemical_list: D006570:Heterochromatin
vernacular_title: Kil'kisna kharakterystyka raĭoniv heterokhromatynu metafaznykh khromosom liudyny na riznykh etapakh ïï ontohenetychnoho rozvytku.