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Allergen (antigen). 1. Antigen-presenting cell (APC) phagocytizes and processes antigen. Allergen (antigen). 2. APC presents antigenic determinant to T H 2 cell. T H 2 cell. 1. Antigen-presenting cell (APC) phagocytizes and processes antigen. Allergen (antigen). 2.
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Allergen (antigen) 1 Antigen-presenting cell (APC) phagocytizes and processes antigen
Allergen (antigen) 2 APC presents antigenic determinant to TH2 cell TH2 cell 1 Antigen-presenting cell (APC) phagocytizes and processes antigen
Allergen (antigen) 2 APC presents antigenic determinant to TH2 cell 3 IL-4 from TH2 cell stimulates B cell TH2 cell 1 Antigen-presenting cell (APC) phagocytizes and processes antigen IL-4 B cell
Allergen (antigen) 2 APC presents antigenic determinant to TH2 cell 3 IL-4 from TH2 cell stimulates B cell TH2 cell 1 Antigen-presenting cell (APC) phagocytizes and processes antigen IL-4 B cell 4 B cell becomes plasma cell, which secretes IgE Plasma cell IgE
Allergen (antigen) 2 APC presents antigenic determinant to TH2 cell 3 IL-4 from TH2 cell stimulates B cell TH2 cell 1 Antigen-presenting cell (APC) phagocytizes and processes antigen IL-4 B cell 4 B cell becomes plasma cell, which secretes IgE Plasma cell IgE 5 IgE binds to mast cells, basophils, and eosinophils IgE Eosinophil Mast cell Basophil