Distribution of Cesium 137 After Chronic Exposure in Dogs and Mice. ∗

Summary

The tissue distribution of Cs¹³⁷ after chronic administration is markedly similar in mice and dogs. The highest concentration is found in muscle, while fat, blood, skin, and bone have lower concentrations. Other tissues tend to conform to the concentration in the whole body, which is less than in muscle and more than in fat. Differences in whole bone concentration are due in part to the state (red or fatty) and quantity of marrow; for example, dog ribs have a higher concentration than dog femurs.