Short-term storage of human spermatozoa in electrolyte-free medium without freezing maintains sperm chromatin integrity better than cryopreservation.
Riel JM, Yamauchi Y, Huang TT, Grove J, Ward MA. Short-term storage of human spermatozoa in electrolyte-free medium without freezing maintains sperm chromatin integrity better than cryopreservation. Biol Reprod. 2011 Sep; 85(3):536-47.