Abstract
In order to clarify the characteristics of anemia in feline leukemia virus positive cats, a total of 267 cats were classified pathologically and pathophysiologically. 224 of the cats with enough data were divided into two groups, i.e a hyperplastic anemia group and a hypoplastic anemia group. The two categories were defined tentatively in this study according to the percentage of reticulocytes. Twenty-seven cats fell into the hyperplastic anemia group, and the other 197 cats into the hypoplastic anemia group, including 26 cases of secondary anemia. There was a tendency for cats with more severe symptomes to be categorized as having macrocytic anemia.
