title: The age distribution of dizygotic twinning in humans and cattle: etiologic implications.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000818:Animals; D002417:Cattle; D004739:England; D005260:Female; D005298:Fertility; D006412:Hematopoietic Stem Cells / Q000166:cytology; D006801:Humans; D007239:Infections / Q000209:etiology; D008297:Male; D008593:Menopause; D009154:Mutation; D010298:Parity; D011153:Population; D011247:Pregnancy; D011272:Pregnancy, Multiple; D012621:Seasons; D014427:Twins; D014429:Twins, Dizygotic; D014852:Wales