Inclusion Criteria

Patients must be asymptomatic according to the following criteria:

• Normal neurologic exam.
• No unintentional weight loss of greater than 10 lbs. or more than 10 percent of usual body weight within 2 years prior to entering the study.
• No unexplained temperature above 38 degrees C on more than 5 consecutive days or on more than 10 days in any 30 days in the 2 years prior to expected entry into the study.
• No unexplained diarrhea defined by equal to or more than 3 liquid stools per day persisting more than 7 days within 2 years prior to expected entry into the study.
• No active hepatitis of any form. In addition, patients must not have previously had AIDS or an AIDS related illness.

Exclusion Criteria

Co-existing Condition:

Excluded:

• Temperature of greater than 37.8 degrees C.
• Development of an AIDS-defining opportunistic infection.
• Unexplained diarrhea defined by equal to or more than 3 liquid stools per day.
• Active hepatitis of any form.

Patients who have had oral candida infection documented by morphology, or by response to antifungal therapy, or oral hairy leukoplakia, or herpes zoster infection within 2 years of anticipated study entry at any time will be excluded. Patients with a prior history of a malignancy other than cutaneous basal cell carcinomas or cervical carcinoma in situ and patients with a significant chronic underlying medical illness that would impair continuous participation in the study will be excluded.

Prior Medication:

Excluded within 90 days of study entry:

• Immunomodulators.

Active alcohol or drug abuse sufficient in the investigator's opinion to prevent adequate compliance with the study therapy.