Wound contraction in different groups. Rat dorsal burn wound area photograph on the 3rd, 7th, 10th, 14th, 21st, 28th day after application of different treatments: burn control group (a-f), silver sulfadiazine group (g-l) and crocodile oil burn ointment group (m-r). Photographs were taken from a representative animal of each group. Scale bar: 1 cm. The percentage of wound contraction in different groups on the 3rd, 7th, 10th, 14th, 21st, 28th day (s): Burn control group, Silver sulfadiazine group, and Crocodile oil burn ointment group. Values are mean ± SE of twelve burns. * P < 0.05; ** P <0.01.