title: No chromosome but image duplication.
authors.affiliation: División de Genética, CIBO, Instituto Mexicano del Seguro Social, Guadalajara, Mexico; Doctorado en Genética Humana, CUCS, Universidad de Guadalajara, Guadalajara, Mexico. hrivera@cencar.udg.mx.
authors.forename: H
authors.initials: H
authors.lastname: Rivera
mesh_terms: D002503:Centromere / Q000235:genetics*; D058674:Chromosome Duplication; D007446:Chromosome Inversion / Q000235:genetics*; D041322:Chromosomes, Human, Y / Q000235:genetics*; D005260:Female; D006570:Heterochromatin / Q000235:genetics*; D006801:Humans; D008297:Male; D011247:Pregnancy; D012729:Sex Chromosome Aberrations
chemical_list: D006570:Heterochromatin