Disappearance of labeled ELL and PBL from the peripheral blood of splenectomized and normal animals (n = 4).

In normal animals (right), labeled PBL (♦) and ELL (□) disappeared from the bloodstream at similar rates. In splenectomized animals (left), the disappearance of labeled ELL (□) was markedly enhanced, but the disappearance of labeled PBL (♦) was unchanged. Data are presented as a percentage of injected cells recovered per milliliter of blood for each population.