title: WGS of Homo sapiens: 25% T21
design: Genomic DNAs from GM01359 and GM04616 cell lines (NIGMS Human Genetic Cell Repository at the Coriell Institute of Medical Research (USA)) were extracted using DNeasy Blood and Tissue kit (Qiagen). To mimic cfDNA, the genomic DNAs were fragmented to 150-200 bp using Covaris M220 Focused-ultrasonicator (Thermo Fisher) with following settings: 50  l volume, 10% duty cycle, 75 W peak incident power, 200 cycles per burst and 360 s. Concentrations were quantified by Qubit dsDNA HS (Thermo Fisher). TruSeq ChIP Sample Prep Kit (Illumina Inc.) protocol with minor modifications (Bayindir et al, 2014) was used as library construction protocol.