The cumulative probability of conception within 12 cycles of insemination with frozen-thawed donor semen increased from 59 to 70% by selecting the semen on the basis of its concentration of adenosine triphosphate (ATP) rather than on the basis of its motile sperm count. The success rate further improved to 83% by performing induction of ovulation in all recipients who did not achieve pregnancy within the initial 6 cycles.
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Comhaire et al. (1986) studied this question.
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