immune system disorder: Quick Facts

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T cell infected with HIV

This medical illustration explains a systemic anaphylactic response to bee venom in someone with type I hypersensitivity. It shows a bee sting injecting venom into the skin, which then enters the bloodstream and spreads throughout the body. The diagram highlights how the immune system reacts, including mast cell activation and the release of substances that cause symptoms such as swelling, low blood pressure, breathing difficulty, digestive issues, and skin reactions. The human figure is annotat

Pathways of complement activation

targeted therapy for cancer; rituximab

Learn about the hygiene hypothesis and understand how exposure to certain germs help develop a child's immunity

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eosinophilia neutrophilia hypogammaglobulinemia immunoglobulin A deficiency lymphocytosis severe combined immunodeficiency monocytosis neutropenia agammaglobulinemia AIDS cardiovascular disease mental disorder nervous system disease digestive system disease respiratory disease blood disease eye disease infectious disease renal system disease skin disease

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