Ultrastructural cytochemical observations revealed peroxidase reactivity in primary (azurophil) granules, but not in secondary (specific) granules, of rabbit and human polymorphonuclear leukocytes. Peroxidase reactivity was also observed in the rough endoplasmic reticulum and granules of rabbit eosinophils and in granules of human monocytes.

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© 1968 by American Society of Hematology, Inc.
1968
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