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Human sperm with normal morphology and good viability were obtained by centrifugation using a discontinuous Percoll density gradient with an inner column. Acrosin (E.C.3.4.21.10) was rapidly purified from sperm by ion exchange adsorption and elution and was purified by affinity adsorption on a lima bean trypsin inhibitor (LBTI) Cellulofine column. The final(More)
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