Parfenova, V. V., T. F. Petrenko, N. A. Volkova, and E. I. Goncharuk. “Cryopreservation of Human Embryonic Fibroblast Culture”. Problems of Cryobiology and Cryomedicine 15, no. 4 (December 25, 2005): 746. Accessed April 29, 2024. http://journal.cryo.org.ua/index.php/probl-cryobiol-cryomed/article/view/1267.