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1 Department "B" Obstetrics and
Gynecology, Hakirya Maternity Hospital, Tel-Aviv, Israel
2 Soferman Institute for the Study
of Fertility, Municipal Governmental
Medical Center, Tel-Aviv, Israel
A method is described for improving the quality of
semen from subfertile men. Semen samples were filtered through bovine cervical mucus (collected at estrus) into spermatozoa-free seminal plasma (from the
same ejaculate following centrifugation, or from azoospermic donor ejaculates). Evaluations were performed
after 2 to 4 hours of filtration at 34 C. The filtered spermatozoa found in the seminal plasma reservoir were
characterized by a significant increase in the percentage
of morphologically normal spermatozoa, higher sperm
motility, and a higher percentage of living sperm.
Sperm density was in the range deemed adequate for
fertility. After filtration into human cervical mucus,
sperm penetration tests were performed with good results, which could be improved by the addition of caffeine to the semen. This method was found to be reliable and to enable the use of the filtered spermatozoa
for insemination (AIH).
Key words: teratozoospermia, bovine cervical mucus, penetration test
Submitted on May 18, 1981
Revised on August 26, 1981
Accepted on October 6, 1981
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