the present data reveal that ( 1 ) hebm/n1 normally contains approximately 50 microm peroxides , little of which is hydrogen peroxide , ( 2 ) the organic peroxide levels accumulating in this medium are not reduced by either catalase or pyruvate , and ( 3 ) medium modifications can reduce to no longer detectable levels the peroxides accumulating in the medium , but catalase or pyruvate is still required for neuronal survival .
C0020281
hydrogen
C0031180
peroxides