While haloperidol did not cause changes of corticosterone, IL-6 and TNF-α concentrations both in NaCl and PCP perinatally treated rats comparing to control groups, clozapine treatment caused the significant elevation of IL-6 in female rats and significant elevation of TNF-α in male rats in both NaCl and PCP perinatally treated animals (NaCl-C and PCP-C groups) compared to controls. The gene discussed is IL6; the disease is pneumocystosis.