title: Sex ratio among sperm cells.
authors.affiliation: Division of Medical Genetics, University of Calgary.
authors.forename: R H
authors.initials: RH
authors.lastname: Martin
mesh_terms: D006801:Humans; D008297:Male; D012744:Sex Ratio; D013094:Spermatozoa / Q000648:ultrastructure*; D014998:Y Chromosome