Protective effect of methylcellulose during cryopreservation of inoculated cells in serum-free medium - C. V. Koshchij; A. N. Goltsev; I. P. Vysekantsev; V. F. Martsenjuk; T. M. Gurina; L. V. Sokol (Problems of cryobiology and cryomedicine, 2013)