spermogram and semen parameters, teratozoospermia, normal and abnormal sperm. head defects spermatozoon

abuse anatomy asymmetric azoospermia background bent biology broken cell concept conception cytoplasmic damage design dna droplet female fertile fertility fertilization fertilize genetic harmful harming health human illustration infertility insemination irregular life male medical medicine micro motility oligozoospermia pathology pregnancy reproduction science semen sex sperm spermatozoa spermatozoon spermicidal thick thin white