Neutrophil Life Cycle with Tritiated Thymidine.

Abstract
The pattern of neutrophilic granulocyte development was studied in 2 dogs by high resolution radioautography with tritiated thymidine. Two to 3 days are required for differentiation from the myelocyte to the segmented neutrophil. The half time for disappearance of the latter in the periphery appears to be of the order of 2 days.