[Relation between chemical structure and histochemical qualities of tetrazolium salts]

For ascertaining correlations between the chemical structure of tetrazolium salts and their histochemical qualities, 97 of these indicators (72 monotetrazolium salts and 25 ditetrazolium salts) were used to demonstrate histochemically the succinic dehydrogenase activity in organs of rat. The nitro-derivatives of tetrazolium salts are of special value for histochemical use.