The use of discontinuous counter-immunoelectrophoresis enhanced the reaction between Au/SH antigen and its antibody in agarose. The ionic strength of the Veronal buffer used in the agarose was 0.015 μ, whereas 0.075 μ Veronal (both pH 8.6) was used for anode and cathode buffers. Electroendosmosis is increased under such conditions. Au/SH antigen and antibody reacted to give sharp lines within 30 to 45 min as compared with conventional counter-immunoelectrophoresis which required 1 to 3 hr or longer.
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Wallis et al. (1971) studied this question.