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We have used acetic acid-urea-triton (AUT) gel electrophoresis and ionic exchange chromatography in order to analyze the interspecific, variability and microheterogeneity pattern of the protamine-like (PL) protiens of the sperm or 4 different species or the bivalve molluse, Mytilus. We have found that based upon these 2 criteria, it is possible to unambiguously distinguish each species from the rest...
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