1. Experimental Immunology Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD 20892.
2. Metabolism Branch, NCI, NIH, Bethesda, MD 20892.
3. Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, NCI, Bethesda, MD 20892.
4. HIV Unit, Wilford Hall Medical Center, Lackland Air Force Base, TX 78236.
5. Genetics Institute Inc., Cambridge, MA 02140.