low sperm count in seminal fluid. low abundance of sperm in the ejaculate. male infertility oligospermia. spermogram

analysis anatomy background biology birth cell count defects design ejaculate examination family fertile fertility fertilization follicle gamete genetic health human icon illustration infertility infographics insemination low male man medical medicine normal oligospermia ovulation pregnancy quality reproduction reproductive semen seminal sex sign sperm spermatozoa spermatozoon spermogram structure types vector