title: An improved microscopical method for determining the numbers of motile and non-motile spermatozoa.
mesh_terms: D002452:Cell Count; D002465:Cell Movement; D002470:Cell Survival; D006801:Humans; D008297:Male; D008858:Microscopy, Phase-Contrast / Q000295:instrumentation / Q000379:methods*; D013048:Specimen Handling; D013094:Spermatozoa / Q000502:physiology*