Main Entry: pro·zone Pronunciation: 'prO-"zOn Function: noun : the portion of the range of concentration of antibody-antigen mixtures in which one ofthem although present in excess does not produce its characteristic effect (as agglutination or precipitation)
prozone pro·zone (prō'zōn') n. The phenomenon in which mixtures of specific antigen and antibody do not agglutinate or precipitate visibly because of an excess of either antibody or antigen.
