Abstract
Summary
The daily subcutaneous injection of 10 to 25 mg of testosterone depressed the spermatozoa count in a 67-year-old man. After its withdrawal the number of spermatozoa increased and during a second period of testosterone therapy the number of spermatozoa again decreased. The duration of the 2 periods of treatment, the daily dosage, and the variation in the spermatozoa counts are presented in the graph.
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