Fig. 3
From: Prenatal genetic diagnosis of tetrasomy 18p from maternal trisomy 18p: a case report
The results of SNP array analysis. (A-C) The fetal amniotic fluid sample SNP array revealed an tetraploid of 18.4 Mb of the 18p11.32p11.1 region (red arrow); (B-D) The mother’s peripheral blood sample SNP array revealed an 18.4 Mb duplication of the 18p11.32p11.1 region (Pathogenic CNV) (blue arrow), and a 1.29 Mb duplication of the 9q22.2 [variant of unknown significance (VUS)]