Figure 4

Alpha smooth muscle actin (SMA) positive cells and cluster of differentiation 68 (CD68) in the intimal hyperplasia lesion of nicotine injection with balloon overdilation group. (A–D) In the hyperplastic lesion of nicotine injection with balloon overdilation groups, SMA positive cells and CD68 positive cells were separately observed. (E–H) An examination at higher magnification, board zone revealed SMA and CD68 co positive cells. (I–L) CD68 positive cells co expressed KLF4.