Fig. 3From: Mutation screening in 86 known X-linked mental retardation genes by droplet-based multiplex PCR and massive parallel sequencingThe dependence of sequencing coverage of amplicons on their GC content (a) or amplicon length (b). The amplicons were grouped depending on their GC content (a) or length (b), the distribution of sequencing coverage within each group is shown as boxplotBack to article page