28 - 3 days prior to entry into the study, 50 male and female subjects 18 - 64 years in age will be screened for eligibility , screening criteria to include physical examination, medical history, pregnancy/ adequate contraception in females, HIV Ab, hepatitis C virus antibodies (HCV Ab), hepatitis B antigen (HBs Ag) and TSST-1 Ab. 46 of these subjects will be entered into the study.