title: Letter: "Menstrual toxin" and human fertility.
mesh_terms: D000818:Animals; D004717:Endometrium / Q000378:metabolism; D004967:Estrogens / Q000502:physiology; D005260:Female; D005298:Fertility; D006801:Humans; D008598:Menstruation; D051381:Rats; D014118:Toxins, Biological
chemical_list: D004967:Estrogens; D014118:Toxins, Biological