Fig. 4From: Detection of fetal trisomy and single gene disease by massively parallel sequencing of extracellular vesicle DNA in maternal plasma: a proof-of-concept validationDiagnosis of fetal diseases using evDNA. Z-score was calculated using evDNA to evaluate the fetal risk of trisomy 21 (a), trisomy 18 (b), trisomy 13 (c)Back to article page