An electrophoretic investigation of mammalian spermatid-specific nuclear proteins

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Abstract
Using standardized methods for protein extraction and analysis, the testes of rams, bulls, goats, boars, stallions, rats, cats, hedgehog, European mink and ferrets were examined for basic spermatid nucleoproteins by electrophoresis. Differences exist in the total number of these proteins and in the number and amount of the cross-linked cystine-containing proteins. These differences appear to be more family-specific than species-specific.