Figure 2. The expression of CD15, CD68, CD3, CD20, CD57, and CD31 in the severe burn group. In the severe burns group, CD15- and CD68-positive cells were the main types of cells that infiltrated the stroma of the amniotic membrane (A and B). CD3-, CD20-, or CD57-positive cells could also be found in the amniotic membrane (C, D, and E). A few CD31-positive cells could also be found in the amniotic membrane (F). Scale bar: 20 μm.