Fig 1: The IHC staining of CD31 and CD34 of granulation tissue (x100). (a, c) QFSJO elevated the expression of CD31 in granulation tissue (compared with the Vaseline group, **p < 0.01, *p < 0.05; compared with the western medicine group, #p < 0.05). (b, d) QFSJO elevated the expression of CD34 in granulation tissue (compared with the Vaseline group, **p < 0.01, *p < 0.05).