1992 年 57 巻 3 号 p. 353-358
Therapeutic dose of vitamin B12 causes significant decrease in the incidence of Malathioninduced mitoinhibition and clastogeny in onion root-tip and bonemarrow cells of mice. Vitamin B12 alone does not produce any changes in division rate or clastogeny. The probable mechanism (s) involved in antigenotoxic effect of vitamin B12 have been discussed.