The ultrastructural morphology of the camel eosinophil

The ultrastructural morphology of the eosinophil was studied in specimens o f peripheral blood from normal adult camels and those with eosinophilia. Sp ecific granules were extremely polymorphic. The specific granules exhibited the basic structure of an electron-dense crystalloid core surrounded by a lighter, homogeneous matrix. The crystalloid cores were extremely variable in size and shape, often were segmented and demonstrated a variety of lamel lated patterns that were transverse, longitudinal or concentric to the long axis of the core. It was not uncommon to observe multiple crystalloid core s in a single granule. In addition to large specific granules, microgranule s and specific microgranules were observed. The extreme polymorphism of the specific granules and variety of lamellated patterns differentiate camel e osinophils from those of other species.