Viability quantitation of leptospires after rapid and controlled rate freezing.
D000818:Animals; D002417:Cattle; D006224:Cricetinae; D046508:Culture Techniques; D005615:Freezing; D007919:Leptospira / Q000254:growth & development*; D008722:Methods; D009584:Nitrogen; D011309:Preservation, Biological; D011817:Rabbits; D012703:Serotyping; D013045:Species Specificity; D013997:Time Factors; D014774:Virulence
D009584:Nitrogen