title: Spatial distribution of chromosomes 1 and Y in human spermatozoa.
abstract: The positions of chromosomes 1 and Y inside human spermatozoa were determined by differential staining techniques. In 85/100 cells the two chromosomes were in close contact and in association with a vacuole. This observation is in contrast to previous findings for chromosome No. 9 and the Y-chromosome whose positions do not appear to be correlated.
mesh_terms: D002900:Chromosomes, Human, 1-3 / Q000648:ultrastructure*; D006570:Heterochromatin; D006801:Humans; D008297:Male; D012730:Sex Chromosomes / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*; D014617:Vacuoles
chemical_list: D006570:Heterochromatin