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Abstract
Proteins of the stria vascularis of the normal and the genetically deaf waltzing guinea pig were analysed by one and two-dimensional acrylamide gel electrophoresis. Cochlear proteins were labeled in vivo by replacing the perilymph with a solution containing radioactive precursors. With the two-dimensional analysis. more than 200 polypeptides were resolved. Proteins that are exposed on the endolymphatic surface of the stria vascularis were identified by lactoperoxidase-catalysed iodination. Seven polypeptides were identified with this technique. No consistent changes in protein patterns of the stria vascularis from the waltzing guinea pig were detected.