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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.
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Weller et al. (1949) studied this question.
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