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A new method of application of platinum macromolecular complex poly{hexacis[chloroamine aquaplatinum (II)]}-mu-deoxyribonucleate (MCP) as a cell cycle synchronization inductor has been developed. The process of some RNA-genome viruses reproduction in cell cultures synchronized by MCP was studied. It was shown that the amount of virus protection in such cultures under special conditions can be increased 100-350 times without increasing the cell substrate amount. The obtained results may be used in biotechnology to increase production of virus antigens and vaccines.

Sorption properties were studied of natural and activated specimens of saponite with respect to poliomyelitis virus, Coxsackie B 1 and B 6 viruses as well as to Enterobacteriaceae group bacteria. With the purpose of comparing the processes of sorption of microorganisms, other minerals were also used, such as bentonite, alunite, glauconite, ceolite. The natural saponite adsorptive properties were found out to undergo changes during the process of thermoactivation. Mechanisms are discussed of a decontaminating effect of thermoactivated saponite in water.

Sorption activity was studied of a naturally occurring dispersive mineral saponite towards certain representatives of the families of Picornaviridae and Reoviridae: poliomyelitis type II viruses, Coxsackie B 1 and B 6, monkey disease rotavirus. In increasing rank order in respect of specific sorption activity is naturally occurring bentonite--sodium form of bentonite--naturally occurring saponite. Possible mechanisms of sorption of viruses on the sorbent's surface, related to structural and chemical properties of the mineral are discussed.