A significant (p < 0.01) decrease in WBC, RBC, Hb, Hct, and PLT without any meaningful change in differential WBC count, indicative of myelosuppressive nonregenerative anemia, panleukopenia, and thrombocytopenia, was observed in CPA control mice compared with intact vehicle control. This evidence concerns the gene GSTM1 and Thrombocytopenia.