( 1 ) they contain an extensive cytoplasmic fibrillar system , ( 2 ) they show immunofluorescent labeling of anti-actin antibodies , ( 3 ) there are cell and cell to stroma attachments , ( 4 ) strips of granulation tissue , when tested pharmacologically in vitro , behave similarly to smooth muscle .
C0010834
cytoplasmic
C0007634
cell