Abstract
Summary
1. The blood picture of 14, 15 and 16 day White Leghorn chick embryos injected into the allantois with aqueous adrenal cortex extract, shows no significant change in the number of lymphocytes but a market absolute polymorph leukocytosis, 24 hours after injection. The erythrocytes are not affected by the extract.
2. Large individual variation in the lymphocyte count and greater difficulty involved in their identification may have obscured the effect of the hormonal preparation on the lymphocyte count.
3. ACE treatment induced a tendency (not statistically significant) toward weight loss in the 14 day embryos, a significant decrease in the hatchability rate, and an apparent defective feather development. However the blood picture and weight in comparison with the controls was normal after hatching.
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