tachyphylaxis

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tachyphylaxis

[‚tak·ə·fə′lak·səs]
(immunology)
Rapid desensitization against doses of organ extracts or serum by the previous inoculation of small subtoxic doses of the same preparation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.