Figure 2From: Mast cell leukemia associated with undefined morphology and chronic basophilic leukemia Showing aggregates of mast cells containing mixed black and orange color round cytoplasmic granules and a giant segmented basophil in (a) (wright’s stain × 100), brown color round granular cytoplasmic staining demonstrated by tryptase immunohistochemical staining on PB smear representing mast cells in (b) (×100). Back to article page