Most characteristic is the presence of Curschmann's spirals, Charcot-Leyden crystals, and eosinophilic leukocytes.
Eosinophiles are formed in the bone-marrow from eosinophilic myelocytes.
Nuclei, basophilic granules, and all blood parasites are blue; erythrocytes are red or pink; eosinophilic granules, bright red.
Certain structures take up only acid dyes, and are called acidophilic, oxyphilic, or eosinophilic.
eosinophilic myelocytes are found only in myelogenous leukemia, where they are often very numerous.
Myelocytes are named according to the character of their granules—neutrophilic, eosinophilic, and basophilic myelocytes.
For eosinophilic cells, some method which includes eosin must be used.
The neutrophilic form is generally much more abundant than the eosinophilic.
eosinophilic leukocytes are common in gonorrheal pus and in asthmatic sputum.