EN
Adult chickens (1.4—1.8 kg of body weight) were immobilized for 5 hours for 3 consecutive days after the prior application of immunosuppresive doses of levamisole for 14 days and immunostimulative injections of TFX (extract from thymus); the drugs were given alone or together. The concentration of corticosterone lysozyme, globulins, the degree of blast transformation and metabolic activity of leukocytes (NBT) were evaluated. The studies did not reveal any correlation between the level of corticosterone and the indices of immunity. An increase of corticosterone and its decrease was found following immobilization and the use of TFX and levamisole respectively. However, immobilization, TFX and levamisole brought about the growth of metabolic activity of leukocytes and lymphocytes transformation. The level of lysozyme was reduced by immobilization and the administration of levamisole; its growth was noted following the application of levamisole with immobilization at the same time. The above treatment of the animals diminished the level of globulins in the blood. The results indicated to a diversity of immune response in chickens and the lack of any correlation between it and the suprarenal gland.