| ureaplasma urealyticum in male infertility in jilin province, north-east china, and its relationship with sperm morphology. | this study investigated the effects of ureaplasma urealyticum infection and raised seminal leucocyte levels on sperm morphology in 967 infertile males and 201 fertile healthy volunteers. u. urealyticum infection led to a significant decrease in the percentage of morphologically normal sperm in infertile males. there was a clear correlation between u. urealyticum infection, raised seminal leucocytes and abnormal sperm morphology. the percentage of morphologically normal sperm was significantly lo ... | 2011 | 21672305 |