the toxicity of chcl3 and ccl4 could also be decreased by adding the antioxidants n , n'-diphenyl-p-phenylenediamine ( dppd ) ( 25 microm ) , alpha-tocopherol acetate ( vitamin e ) ( 0.1 mm ) , or superoxide dismutase ( sod ) ( 100 u/ml ) to the cultures .
C1999896
alpha-tocopherol acetate
C0042874
vitamin e