Eosinophil Rhythm in Splenectomized Mice.

Abstract
At several postoperative time points, eosinophil counts were made on tail blood from splenectomized and from sham-operated male B1 mice, kept under standardized environmental conditions. Occurrence of post-splenectomy eosinophilia was noted. The mean eosinophil counts of all the groups of mice studied were consistently higher by day than by night. In B1 mice and rats, the presence of the spleen is not essential for maintenance of eosinophil rhythm.