Abstract
Summary
Measurements of the life span of the erythrocyte with glycine-2-C14 give a value of 20 days for mean survival time for the chicken and 39 days for the duck. The uptake of the a-carbon of glycine into the cell proteins in the chicken was similar to that observed in the mammals. The shape of the decay curve was typical of that observed when a homogeneous group of red cells are labeled in the marrow, and gave little evidence of re-utilization of the labeled carbon. The utilization of glycine a-carbon by the duck cells was similar to that observed in the chicken except for the rapid uptake which gave some evidence of uptake by the cells in the peripheral circulation.
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