Morphological Study of Liver in Rats with Toxic Hepatitis After Application of Cryopreserved Human Cord Blood Serum - A. M. Holtsev; O. V. Falko; V. V. Volina; O. V. Lipina; O. S. Prokopiuk; O. K. Hulevskyi (Problems of cryobiology and cryomedicine, 2018)