Rohoza, L. A.; Bespalova, I. G.; Galchenko, S. Y.; Semenchenko, O. Y.; Sandomirsky, B. P. Concentration of Peptides in Extracts of Cryopreserved Fragments of Pig and Piglet Organs and Role of Endogenous Proteases in Their Formation. Probl Cryobiol Cryomed 2014, 24, 132-139.