eee lr 4 * ~ : ALAMOG SCIENTIFIC LABORATORY UMIVERSITY OF CALIFORNIA Loe ALAMOS. NW MICO OFFICE MEMORANDUM Dr. T. L. Shipman - H-DO Cc. C. Lushbaugh . SUBJECT: SYMBOL. : DATE: BIS AO O for sual sad May 23, 1957 ADMINISTRATION OF Cr°! TO VOLUNTEERS H-4 | mower tana Lami | enamel we we” men. Gel Scat enam ut . : Shed eg — _ — As you know, we are planning this summer to sake an_ extensive study of the use of radioactive chromium as a tag upon the living circulating red cell is man and experinental animals. In particular, we wish to study the applicability of the whole-body counter to this technique. The only method available at the present tine requires withdrawing multiple blood samples, which require extensive technical manipulation and give a decay curve which is extremely difficult to inter- pret in the sick person. Since-the whole-body counter would measure the entire body's retention of chromium and since the evidence indicates that the retainedchromium is on the red cell, the whole-body counter shouldbe able to make a determingtion in 100 seconds that at the_present time requires a technician several hours to couplete. For this purpose, we plano to tag the red cells of about ten normal persons and about ten patients. Dr. Murray Friedman ofSanta Fe, whose son Harold will be working with us, is trying to obtain patients from all over the state with various blooddyscrasias. Dr. DeBriere of the Los Alamos Medical Center assures ne that the Hospital Bed Fund of the Los Alanos Medical Center Women's Auxiliary will attempt to defray the hospitalization costs of the out-of-town patients. The Special Stidies Labora- tory of the Los Alamos Cancer Clinic will perform-—the controlling hematological studies, so there should be no clinifil costs accruing from this study. Drs. Robert Grier, Paul Lee;—Charles Shafer, and Sidney DeBriere have agreed to help se with these FILE BARCODE REMARK 80131830 BP (| a {. t 4 — 00131830.001 BEST COPY AVAILABLE

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