Ключевые слова: 3d, abstract, activity, biological, biology, biotechnology, bodily, body, cell, chemistry, clinic, closeup, diagnostic, dimensional, egg, ejaculate, examination, experiment, fecundating, fecundation, fertility, flagellum, fluid, gamete, group, healthcare, healthy, illustration, laboratory, liquid, male, mature, medical, medicine, microscope, ovule, reproduction, reproductive, research, science, seed, semen, seminal, sperm, spermatozoon, sterile, substance, three,