they were investigated by two complementary methods : electron microscopy to analyze the bmz reorganization , and indirect immunofluorescence with species-specific and cross-reacting antibodies directed against laminin , bullous pemphigoid antigen , mouse or human collagens of types i or iv , human elastic fibers , fibronectin , fibrin , actin , and human vimentin , to examine the species origin and distribution of bmz and connective tissue components during the regeneration process .
C0086418
human
C0042666
vimentin