we observed three kinds of fnxs : ( a ) tandem associations between the termini of individual extracellular fibronectin fibers and actin microfilament bundles at the tips of elongate myofibroblast processes , ( b ) plaque-like and , ( c ) track-like fnxs , in which parallel fibronectin and actin fibers were connected by perpendicular transmembranous fibrils .
C0025979
actin
C0001271
actin