- acute phase reactants a group of proteins that are produced and/or released in increased concentrations during the acute phase reaction, including fibrinogen; C-reactive protein; complement proteins B, C3, C4; α2-acid glycoprotein, serum amyloid A, proteinase inhibitors, etc.
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re·ac·tant -tənt n a substance that enters into and is altered in the course of a chemical reaction
reactant adj
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re·ac·tant (re-akґtənt) an original substance entering into a chemical reaction.Medical dictionary. 2011.