title: Shedding new light on false positive diagnosis of trisomy 21 by fluorescence in situ hybridization (FISH) on uncultured amniotic fluid cells: experiences from two Canadian cytogenetic laboratories.
authors.affiliation: Cytogenetics Laboratory, Hamilton Regional Laboratory Medicine Program, Hamilton Health Sciences, Hamilton, Ontario, Canada.
authors.forename: Jia-Chi
authors.initials: JC
authors.lastname: Wang
authors.forename: Kathy
authors.initials: K
authors.lastname: Bowser
authors.forename: Judy
authors.initials: J
authors.lastname: Chernos
mesh_terms: D000328:Adult; D000416:Alberta; D000653:Amniotic Fluid / Q000166:cytology*; D004314:Down Syndrome / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000235:genetics; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007231:Infant, Newborn; D008297:Male; D009864:Ontario; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis; D014463:Ultrasonography