Lobyntseva, G. S., I. V. Vorozhka, and A. V. Sitnikova. “Infection of Cord Blood and Embryos at Early Gestation Terms and Hemopoiesis in Embryonic Liver”. Problems of Cryobiology and Cryomedicine, vol. 18, no. 3, Nov. 2008, pp. 355-60, http://journal.cryo.org.ua/index.php/probl-cryobiol-cryomed/article/view/410.