Abstract
ABSTRACT IT IS known that the adrenocorticotropic hormone (ACTH) and several adrenal steroids will decrease the number of circulating lymphocytes and eosinophils in certain mammals, Dougherty and White (1944) and Dougherty and Dougherty (1953). Less is known about the effects of ACTH and adrenal steroids on the circulating white cells in the chicken. Adrenocorticotrophic hormone has been reported by Huble (1955) to decrease lymphocytes and increase the number of heterophils, and to have no effect on lymphocytes and eosinophils, Stamler et al. (1950). Shapiro and Schechtman (1949) reported that the injection of adrenal cortical extract into adult chickens produced a transient lymphopenia and an increase in heterophils. The data of Huble (1955) and Bannister (1951) indicate that daily administration of cortisone acetate will reduce the lymphocytes and eosinophils and increase the number of heterophils in the chicken. The number of leukocytes and variation in differential counts after cortisone injection may not . . .
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