Terzoli, G First-trimester fetal karyotyping by direct method. Technical and diagnostic problems. [electronic resource] - Contributions to gynecology and obstetrics 1986 - 61-9 p. digital Publication Type: Journal Article ISSN: 0304-4246 Subjects--Topical Terms: Chorionic Villi--ultrastructureChromosome AberrationsChromosome BandingDiagnostic ErrorsFemaleHumansKaryotyping--methodsMetaphaseMitosisPregnancyPregnancy Trimester, FirstPrenatal Diagnosis--methods