Fig. 2

SDS-PAGE analysis of SSC. M: HiMark protein standard; I. type I collagen from calf skin. Lanes 1 and 2: SSC under non-reducing and reducing conditions. 3: SSC from desalinization condition under reducing conditions. α1, α2, β and γ were the α1 chain, α2 chain, β chain and γ chain of shark skin collagen, respectively