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from Brown Corpus
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After passing Af through DEAE-cellulose, the titer of antibodies to WTV in the specific fraction was 1: 4 of the titer before such passage ( precipitin ring tests by R. F. Whitcomb ) ; ;
but mere dilution of the conjugate to 1: 4 did not satisfactorily remove nonspecific staining.
This indicates that increase in specificity of Af after passing it through DEAE-cellulose was not merely due to dilution.

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