zoning

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zon·ing

(zōn'ing),
The occurrence of a stronger reaction in a lesser amount of suspected serum, observed sometimes in serologic tests used in the diagnosis of syphilis, and probably the result of high antibody titer.

zon·ing

(zōn'ing)
The occurrence of a stronger reaction in a lesser amount of suspected serum, observed sometimes in serologic tests used in the diagnosis of syphilis, and probably the result of high antibody titer.

zoning

(zōn′ing)
The occurrence of a stronger fixation of complement in a lesser amount of suspected serum; a phenomenon occasionally observed in diagnosing syphilis by the complement-fixation method.