Spermatogenesis is a highly complicated process which initiated by spermatogonial stem cells (SSCs). SSCs are the only cell type that can restore fertility in infertile recipient after SSCs transplantation. SSCs damage during cancer diagnosis and therapy and their depletion may be cause of male infertility in cancer survivors. In this review, used experimental methods regarding SSCs and testis tissue cryopreservation have been reviewed with a special focus on animal models and human which have generated the majority of data about SSCs and the cryopreservation process.

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