- pseudoreaction
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pseu·do·re·ac·tion -rē-'ak-shən n a reaction following the injection of a toxin (as in the Schick test) which is caused by something (as impurities in the test medium) other than the toxin itself* * *
pseu·do·re·ac·tion (soo″do-re-akґshən) a false or deceptive reaction; in intradermal tests, a skin reaction due not to the specific protein used in the test but to the protein of the medium used to produce the toxin.
Medical dictionary. 2011.