title: Status of basic external human fertilization.
mesh_terms: D000022:Abortion, Spontaneous / Q000209:etiology; D002452:Cell Count; D004624:Embryo Transfer; D005260:Female; D005498:Follicular Phase; D006801:Humans; D007247:Infertility, Female / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology; D008297:Male; D009865:Oocytes / Q000502:physiology; D011247:Pregnancy; D011272:Pregnancy, Multiple; D013997:Time Factors; D015053:Zygote / Q000637:transplantation