Eosinophil Rhythm in Splenectomized Mice. ∗

Abstract

Summary

At several post-operative time points, eosinophil counts were made on tail blood from splenectomized and from sham-operated male Bi mice, kept under standardized environmental conditions. The occurrence of post-splenectomy eosinophilia was noted. Furthermore, the mean eosinophil counts of all of the groups of mice studied were consistently higher by day than by night. In Bi mice and rats the presence of the spleen is not essential for the maintenance of eosinophil rhythm.