Fig. 2

a Schematic structure of COL3A1 gene (NG_007404.1) is located on chr2q31 and composed of 51 exons. b COL3A1 DNA sequence in an unaffected individual and in a patient with vascular type of Ehlers–Danlos syndrome. Each nucleotide is indicated with a different color: A green, C blue, G black, T red