Eosinophil granulocytes, usually called eosinophils or eosinophiles, are granulocyte white blood cells that fight off certain parasites and infections in vertebrates. When they are activated, eosinophils release a cocktail of proteins from their granules, including heparin. Like mast cells and basophils, their main targets are parasites, and they are part causes of the syndromes called asthma and allergy.
|Anatomical terms of microanatomy|
Eosinophils make up 1-6% of white blood cells circulating in the body. They are similar in size to neutrophils but have reddish-orange granules (when stained with eosin) and a bilobed nucleus. Eosinophil granulocytes are important defenders against large, multi-cellular parasites, such as worms and flukes. Their numbers increase during a parasitic infection.
- "eosinophil - Definition of eosinophil in English by Oxford Dictionaries". Oxford Dictionaries - English. Retrieved 27 March 2018.