The Effects of X-Radiation on CircuLation in the Wing of the Bat

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Abstract
Direct observations and cinemamicrophoto-graphs were made of the blood vessels in the wing of the living bat, Myotis lucifugus, each day following total-body irradiation and following local irradiation of a portion of the wing. No circulatory changes were noted after total-body irradiation with dosages of less than 10,000r. Doses over the range of 10,000 r to 60,000 r elicited sticking of leucocytes to blood vessel walls, aggregation of red cells into clumps and stagnation of blood. No other changes were seen. In the areas locally irradiated no alterations in circulation were noted following dosages of less than 50,000 r. After 50,000 r to 5,000,000 r leucocyte sticking, red cell clumping, white cell clumping, platelet thrombi and stagnation of blood occurred. With the exception of red cell clumping the various intravascular changes were quantitatively related to radiation dosage. The authors discussed the significance of the several intravascular reactions in relation to the stagnation of blood.

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