Mechanisms for Eosinophilic and Neutrophilic Leucocytoses

Abstract

Thymus-deprived mice are unable to react with eosinophilia to an appropriate stimulus, but their ability to mount a neutrophil leucocytosis in response to pyogenic infection is unimpaired. It appears that thymus-processed lymphocytes are required for induction of eosinophil but not of neutrophil leucocytosis.