title: Positive hydrodynamic interaction between swimming bul spermatozoa.
mesh_terms: D000818:Animals; D002417:Cattle; D002465:Cell Movement; D002951:Citrates; D004530:Egg Yolk; D005260:Female; D008297:Male; D013094:Spermatozoa / Q000502:physiology*; D013696:Temperature; D013997:Time Factors
chemical_list: D002951:Citrates