Syvyk, Tetyana, Leonid Djachenko, and Andrew Syvyk. 2018. “OPTIMIZATION OF FREEZING CONDITIONS FOR CRYOPRESERVATION OF RAT SPERMATOGONIAL STEM CELL”. Journal of Microbiology, Biotechnology and Food Sciences 8 (3):947-50. https://doi.org/10.15414/jmbfs.2018-19.8.3.947-950.