[The co-mutagenic effect of metabolic extracts of fungi grown on the main grain in high incidence liver cancer areas--Fusui County].

Twenty strains of the common fungi were isolated from the staple grains in the high incidence liver cancer areas--Fusui county, and their metabolic extracts were prepared. Possible co-mutagenic effects of these metabolic extracts on Salmonella typhimurium TA98 and TA100 mutants were tested. The results showed that in vitro these metabolic extracts had different degrees of co-mutagenic effects. It is considered that these co-mutagenic effects may play an important role in the incidence of liver cancer in Fusui county.