artificial atlases casestudies clinicalchemistry congresses diseases fertility fertilization generativeorgans genitaldiseases genitalia gonadalsteroidhormones human humanreproduction infertility insemination male malegenerativeorgans malegenitalia medical medicine methods nursing physiological physiology popularworks reproductivemedicine semen sexualdysfunction spermatozoa technology urology wj700 wj700m8511993 wj700r2951978 wj875m2451981