Evaluation of the Wound Healing Potential of Achillea biebersteinii Afan. (Asteraceae) by In Vivo Excision and Incision Models

Figure 3

Microscopic view of the section of negative control group (untreated) 10 days old wound tissue. (a) area of ulceration; (b) mixed type inflammatory cells; (c) edema and (d) congested vessel.