LIFE CYCLE OF WHITE BLOOD CELLS

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Abstract
The level of the white blood cells in the peripheral blood of a leukopenic cat can be elevated markedly by means of cross circulation with a normal cat. Following discontinuation of the cross circulation, the white blood cells of the leukopenic cat rapidly return to their previous low level. The avg. rate of disappearance of the white blood cells in the cat is 881 cells/cu. mm./hr. The hypothesis is advanced that the white blood cells of the cat may be replaced about 1 1/2 times in 24 hrs. It is assumed that the white blood cells use the general circulation as a means of transportation. This does not mean that they are functionally inactive while in transit but suggests that their more important functions are performed in the body tissues other than the blood.