[Freezing of sperm in liquid nitrogen].
D005260:Female; D005615:Freezing; D006801:Humans; D007315:Insemination, Artificial; D008297:Male; D009584:Nitrogen; D013094:Spermatozoa; D014021:Tissue Preservation
D009584:Nitrogen
La congelazione dello sperma nell'azoto liquido.