Animal toxicology

lite of 2,4,3',4'-tetrachlorobiphenyl was more toxic than the parent compound (0.43 g/kg body weight, relative to 2.15 g/kg body weight (Table 1).Dermal toxicity of PCB is summarized in Table 3. Polybrominated Biphenyls (PBBs)Polybrominated biphenyls show a low order of acute toxicity to the rat (Table 4).In the case of chicks, a 37% mortality was reported when PBB was administered in the diet at a level of 400 ppm for June 19781