Figure 4.

In vivo effect of exosomes on carotid artery injury. A. Evans blue dye was used to calculate the re-endothelialization ratio. Nonendothelialized lesions are represented by blue staining and the re-endothelialized area displays as white. The index of re-endothelialization was calculated as the white area/total area ratio. Data are displayed as mean ± SD, P < 0.05, Scale bar: 1 mm. B. Hematoxylin-eosin staining of carotid artery sections. The intimal to medial area ratio (I/M) was used to evaluate neointimal hyperplasia and is shown as the mean ± SD, P < 0.05, Scale bar: 100 μm.