Abstract
This paper describes the age-related and hormonal bursectomy-induced changes in the frequency of appearance of α-naphthyl butyrate esterase (ANAB)-positive cells in chicken peritoneum. The phagocytic ability of macrophages was determined with sensitized and non-sensitized sheep erythrocytes (SRBC).The increase in the number of ANAB-positive cells ranged from 65% at 1 week of age to 90% at 2 and 4 weeks of age in controls. With testosterone propionate (TP) treatment during embryonic development, 98% of the cells taken were positive for ANAB at 1 week of age.Some difference was found in the non-specific phagocytosis, but not in the specific phagocytosis, between macrophages harvested from the normal and TP-treated groups. TP treatment induced enhancement of the non-specific phagocytic activity of macrophages. No correlation was found in the present study between non-specific phagocytosis and the appearance of ANAB-positive cells.
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