Eosinophils

Julen Lux Baranano

edited by

Joshua Klemt,

1. Definition

Eosinophils are a type of white blood cell that play a crucial role in the immune response by combating parasitic infections, mediating allergic reactions, and regulating inflammation.

3. Physiology

Absolute Count: This percentage corresponds to approximately 100 to 400 eosinophils per microliter (µL) of blood in a healthy individual
Percentage in Blood: Eosinophils typically account for 1-4% of total white blood cells
Eosinophilia: An increase in eosinophil count above the normal range
Eosinopenia: A decrease in eosinophil count below the normal range

2. Function

Defense Against Parasites:

larger parasites: helminths (worms)
release toxic granules that damage or kill these invaders

Mediation of Allergic Reactions:

allergic conditions like asthma and hay fever
releasing inflammatory mediators such as histamines
leukotrienes that contribute to tissue inflammation and hypersensitivity

Regulation of Immune Responses:

help modulate the activity of other immune cells, maintaining a balanced immune response

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Specialty

biology, histology, immunology, Physiology

Keywords

Last edit:

2024-12-26 19:21:41

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