title: [Determination of fetal sex by studying the zinc concentration in the amniotic fluid during the second trimester of pregnancy (preliminary report)].
authors.forename: B
authors.initials: B
authors.lastname: Marinov
authors.forename: K
authors.initials: K
authors.lastname: Tsachev
authors.forename: R
authors.initials: R
authors.lastname: Ruseva
mesh_terms: D000649:Amniocentesis; D000653:Amniotic Fluid / Q000032:analysis*; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011379:Prognosis; D012732:Sex Determination Analysis; D013054:Spectrophotometry, Atomic; D015032:Zinc / Q000032:analysis*
chemical_list: D015032:Zinc
vernacular_title: Opredeliane na pola na ploda chrez izsledvane na kontsentratsiiata na tsinka v okoloplodnata technost prez vtoroto trimesechie na bremennostta (predvaritelno sŭobshtenie).