Rapid freezing of bull semen in straws.
D000818:Animals; D002417:Cattle; D002470:Cell Survival; D005615:Freezing; D007315:Insemination, Artificial / Q000662:veterinary; D008297:Male; D008722:Methods; D011309:Preservation, Biological / Q000295:instrumentation; D013094:Spermatozoa