1. Blood Bank Department, Clinical Center, and the Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Md. 20014, and the Rockville Laboratory of the Molecular Anatomy Program, Oak Ridge National Laboratory, Rockville, Md. 20850.
2. Immunology Section, Blood Bank Department, Clinical Center, NIH, Bethesda. Md. 20014.
3. Blood Section, Blood Bank Department. Clinical Center, NIH. Bethesda. Md. 20014.
4. Laboratory of infectious Diseases, National institutes of Allergy and Infectious Disease, NIH, Bethesda, Md. 20014.
5. Rockville Laboratory 0f the Molecular Anatomy Program, Oak Ridge National Laboratory, Rockville. Md. 20850; research sponsored by NIAID under Union Carbide Corporation's contract with U.S. Atomic Energy Commission.