Morphological and proliferative characteristics of cultured Vero and MDCK cells were compared after growth in nutrient media of the basis of enzymatic hydrolysates of rice flour proteins and soybean flour proteins or control media (DMEM and Axcevir-MDCK). These media had a strong stimulatory effect on the growth of cultured Vero cells (addition of 3% fetal bovine serum, Gibco), but did not modulate the morphology of this culture. Culturing of MDCK cells in nutrient media on the basis of enzymatic hydrolysates of rice and soybean flour proteins with low content of fetal bovine serum (2%, Gibco) was accompanied by insignificant changes in the index of proliferation and morphological characteristics of cultured cells.

We studied vaccine strains of influenza viruses A and B during their culturing in MDCK and Vero cells grown in Eagle's MEM medium and in a medium on the basis of enzyme hydrolysate of rise flour proteins with reduced (2%) content of fetal calf serum. Optimal conditions for cell culturing and reproduction of influenza virus strains in these cells were studied. Culturing of vaccine strains of influenza viruses in MDCK and Vero cells grown in nutrient media on the basis of rise flour protein hydrolysate yielded high infection titers, which suggests that this medium can be used for the development of cultural influenza vaccine.