Tissue stored in liquid nitrogen after slow freezing using a low concentration of cryoprotectant such as DMSO, glycerol or ethylene glycol maintains its capacity to produce spermatocytes (human, primate), spermatids (pig) or sperm (pig, rabbit).
Tissue stored in liquid nitrogen after slow freezing using a low concentration of cryoprotectant such as DMSO, glycerol or ethylene glycol maintains its capacity to produce spermatocytes(human, primate), spermatids (pig) or sperm (pig, rabbit).