Histamine
A chemical released by mast cells during an allergic reaction, responsible for many common allergy symptoms.
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IgE (Immunoglobulin E) [IgE]
A type of antibody involved in allergic reactions and immunity against parasites.
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Leukotrienes
Inflammatory mediators released by mast cells and other immune cells, contributing to allergic reactions especially respiratory symptoms.
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Prostaglandins
Lipid compounds with hormone-like effects involved in inflammation and allergic responses.