1. Medicine Branch and Laboratory of Pathology, National Cancer Institute, Bethesda, Md. 20014.
2. Clinical Pharmacology Section, Medicine Branch. National Cancer Institute, National Institutes of Health, Bethesda, Md. 20014.
3. Medicine Branch. National Cancer Institute, National Institutes of Health, Bethesda, Md. 20014.
4. Hematology Investigations Section. Medicine Branch. National Cancer Institute. National Institutes of Health. Bethesda. Md. 20014.
5. Cellular Kinetics Section. Medicine Branch. National Cancer Institute, National Institutes of health, Bethesda, Md. 20014.
6. Medicine Branch. National Cancer Institute. National Institutes of Health, Bethesda, Md. 20014.
7. Hematopathology Section. Laboratory of Pathology. National Cancer Institute. National Institutes of Health, Bethesda. Md. 20014.