title: Use of Ficoll-sodium metrizoate density gradient to separate human X-and Y-bearing spermatozoa.
mesh_terms: D002469:Cell Separation / Q000379:methods; D002470:Cell Survival; D002499:Centrifugation, Density Gradient; D005362:Ficoll; D005818:Genetic Engineering; D006801:Humans; D008297:Male; D008794:Metrizoic Acid; D012730:Sex Chromosomes; D012743:Sex Preselection; D013081:Sperm Motility; D013094:Spermatozoa
chemical_list: D005362:Ficoll; D008794:Metrizoic Acid