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Several substances can interfere with microtubular function eg. colchicine. Melatonin, a hormone secreted by the pineal gland has similar effects as colchicine on microtubules. In this study… (More)
This study was undertaken to determine the frequency of bacteria and Mycoplasmas in semen of infertile African men and to compare abnormal semen parameters with the presence of these organisms.… (More)
The major cause of infertility among black Africans is traditionally attributed to a female factor and few reports are available on the male factor. This study analyzed the clinical and seminal data… (More)
In this study the concentrations of plasma melatonin in patients with either prostatic or breast carcinoma were compared to the levels of controls. The mean melatonin was statistically lower in… (More)
Sexually transmitted diseases (STDs) affect the physiology of male/female reproduction. Chronic bacterial infection of semen is uncommon, but may be a cause of male infertility. Antibacterial… (More)
Spermaturia can be used as an indicator of genital and sexual maturation in puberty. In this study the mean age of the onset of puberty in Tswana schoolboys was determined. Of the boys between 10 and… (More)