Fig. 1.
Analysis of 90Sr retention for dose calculation. a Retention of 90Sr over the time course of the study, points are whole-body counts of 90Sr activity shown as percentage of the injected amount; measured daily on days 0-7, then on days 9, 11, 15, 16, 20, 23, 25, 27, and 30 after injection. Points are average counts and error bars are SEM of animals measured over the time course. b Amount of 90Sr activity recovered after necropsy in femur (right and left) and carcass (not de-boned containing the remaining skeletal tissue). The average content on day 4 was 142 nCi, which decreased to 126 nCi on day 7 and 116 nCi on day 9. Femur content (●) stabilized for the last two collection times. Carcass content (■) on the day of euthanasia and necropsy was consistent with collected whole-body counts and decreased for the duration of the study. All points are average and SEM measurements of 90Sr activity measured in necropsied animals on days indicated