The effects of lipoprotein on the survival and livability of spermatozoa, frozen at low temperatures, were studied. Five per cent added lipoprotein increased sperm survival about 5%, a 2.5% level was ineffective, and the 10% was no better than the 5% level. Differences in percentage of live sperms and in motilities between the control and 5% added lipoprotein were highly significant in favor of the 5% level. Editor.
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Bialy et al. (1957) studied this question.
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