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exaggerated allergic reaction to a foreign protein resulting from previous exposure to it.
extreme sensitivity to an injected antigen, esp a protein, following a previous injection

see anaphylactic.

anaphylaxis an·a·phy·lax·is (ān’ə-fə-lāk’sĭs)
n. pl. an·a·phy·lax·es (-lāk’sēz)

Hypersensitivity induced by preliminary exposure to a substance and usually producing a contraction of smooth muscle and a dilation of blood vessels.

See anaphylactic shock.

an’a·phy·lac’tic (-lāk’tĭk) adj.
See anaphylactic shock.


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