The Content of Eosinophil Cationic Protein in Eosinophil Leucocytes.

Abstract
Eosinophil cationic protein constitutes a major part of eosinophil leukocyte granule protein. Low serum concentrations were previously found in patients with [allergic] bronchial asthma. As this might reflect a low intracellular content, eosinophils were isolated from normal controls and patients with bronchial asthma. Eosinophil cationic protein was estimated after extraction of the cells and a similar content was found in cells from both groups.