The cells in S stage in the group with FN were more than the others. Conclusion: Collagen, FN and PLYS could improve the cell adhere degree and accelerate cell proliferation.

• 结论用胶原、FN和 PLYS对PHB进行表面改性均可提高PHB对细胞的亲和力，增加细胞的粘附率，从而促进细胞的生长。