Petrenko, Y.A., Tarasov, A.I., Grischenko, V.I. and Petrenko, A.Y. 2002. Cryopreservation Effect on Immunologic Activity and Phenotypic Composition of Human Embryonic Liver Lymphoid Cells. Problems of Cryobiology and Cryomedicine. 4 (Dec. 2002), 76–79.