these studies showed that normal acinar cells rested on continuous bm ( containing laminin , heparan sulfate proteoglycan , and type iv and v collagens ) and displayed a polarized distribution of intracellular organelles , cytoskeletal assemblies ( concentration of actin within terminal web ) , and distinct membrane domains ( apical leucine aminopeptidase ) .
C0010853
cytoskeletal
C0001271
actin