Fig. 1From: Three-hour analysis of non-invasive foetal sex determination: application of Plexor chemistry a Result interpretation of the Plexor-HY assay on cffDNA. The detection of the fluorescence signal is indicative of the presence of Y-chromosomal DNA substrate (male foetal sex). b Result interpretation of the Plexor-HY assay on cffDNA. In this case, the absence of the fluorescence signal is interpreted as the presence of X-chromosomal DNA substrate (female foetal sex)Back to article page