This paper presents the results of micronuclear rate and micronuclearmorphology of each 110 subjects exposed to lead/benzene with healthynonexposed as control,Result of the observation showed that the medianmicronuclear rate of the exposed groups were significantly higher than that ofthe control (P<0.001).Great micronuelear rate of the lead group weresignificantly different from that of the beuzene group(P<0.001).Multimicronuelear rate of lead group were also significantly differ-ent as compared to the benz...