Abstract

A simple and sensitive method for immunoblotting of proteins after separation in agarose gels is described. It involves transfer of proteins onto nitrocellulose paper simply by diffusion through pressure, a transfer which only takes about 10 min. By this method we have demonstrated the exixtence of multiple molecular forms of the complement factors C3 and factor B in serum from 2 species, man and chicken, after electrophoretic separation in agarose. We have also demonstrated tyhe usefulness of the method for determining the isoelectric point of proteins after isoelectric focusing in agarose.

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