State of gata2 gene in hematopoietic stem cells of recipients with graft versus host disease induced by cryopreserved allogeneic material - A. N. Goltsev; T. G. Dubrava; Ju. A. Gaevskaja; E. D. Lutsenko; M. V. Ostankov (Problems of cryobiology and cryomedicine, 2015)