title: [Simultaneous identification of the nucleolar organizing regions and G bands in obstetrical cytogenetic studies].
abstract: An improvement of the silver-staining method of the nucleolus organizer region with simultaneous trypsin-Giemsa-banding is described. The combined demonstration of such regions (which express the transcriptive activity of ribosomal ribonucleic acid genes) and the precise identification of chromosomes, particularly acrocentric chromosomes, should be of value in the investigation of parents with spontaneous abortion in whom abnormal acrocentric chromosomes are often encountered.
authors.affiliation: Hospital de Oncología Centro Médico Nacional Siglo XXI, IMSS, México, D.F.
authors.forename: E
authors.initials: E
authors.lastname: Aguilar Parada
authors.forename: M
authors.initials: M
authors.lastname: Rábago Velasco
authors.forename: M
authors.initials: M
authors.lastname: Espinosa Torres
mesh_terms: D000328:Adult; D001399:Azure Stains; D002871:Chromosome Banding; D003582:Cytogenetics; D005260:Female; D006801:Humans; D009697:Nucleolus Organizer Region; D009774:Obstetrics; D011247:Pregnancy; D012335:RNA, Ribosomal; D012270:Ribosomes
chemical_list: D001399:Azure Stains; D012335:RNA, Ribosomal
vernacular_title: Identificación simultánea de las regiones organizadoras nucleolares y de las bandas G en el estudio citogenético en obstetricia.