Fig. 5From: The effect of polyglycolic acid sheet in preventing postoperative recurrent pneumothorax: a prospective cohort studyPathological specimen of the resected pleura that was covered by a polyglycolic acid sheet. a. hematoxylin–eosin staining, × 4: inflammatory thickened visceral pleura. b. hematoxylin–eosin staining, × 20: fibrosis and angiogenesis were foundBack to article page