NORMAL HEMATOLOGIC VALUES OF VARIOUS AGE-GROUPS OF CALOMYS-CALLOSUS (RODENTIA CRICETIDAE)

Hematologic values for Calomys calosus, a wild rodent, were establishe d. Males and females from a colony raised in Animal Housing of the Ins titute of Tropical Medicine of Sao Paulo were examined individually. F or the red blood cell series, the number of erythrocytes, hemoglobin c oncentration, hematocrit, and platelet and reticulocyte numbers were m easured. All values except hemoglobin concentration were slightly high er in aged animals than in young animals. The white blood cell series had a predominance of lymphocytes, with no age-associated changes.