1. Antibacterial activity of human amniotic fluid;Bergman;Am. J. Obstet. Gynecol.,1972
2. Effect of cobaltous chloride on spontaneous mutation induction in a Bacillus subtilis mutator strain;Inoue;Mutation Res.,1981
3. Reduction of N-methyl-N′-nitro-N-nitrosoguanidine induced mutations by cobaltous chloride in Escherichia coli;Kada,1978
4. Antimutagenic activities of human placental extract on ultraviolet light and gamma-ray induced mutations in Escherichia coli;Kada;J. Rad. Res.,1981
5. Anti-mutagenicity of human placenta extract: chemical studies;Komura,1983