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The prostaglandin levels have been measured in a group of men with sperm concentrations greater than 300 X 10(6)/ml and compared with the levels in men with sperm concentrations of 50 to 150 X 10(6)/ml. The distribution of the PG levels in all groups was highly skewed but the data could be transformed to a normal distribution by taking logarithms. Comparison of the PG levels showed a highly significant lowering of the PG levels in the polyzoospermic group when compared wieth either of the groups with normal sperm concentrations.

Reduced prostaglandin levels in the semen of men with very high sperm concentrations