what are actin filaments edit actin filaments f actin are linear polymers of globular actin g actin subunits and occur as microfilaments in the cytoskeleton and as thin filaments which are part of the contractile apparatus in muscle and nonmuscle cells see contractile bundles
CELLULAR ADHESION MOLECULES 91 Thus, modulation of syndecan expression may be required for the maintenance of some tumors.67 In humans, Ridley et al68 have examined syndecan expression, structure, and function on myeloma cells.
TNF-Î± stimulates the expression of proinflammatory cytokines, chemokines, and adhesion molecules by leukocytes and endothelial cells and regulates extracellular matrix metabolism by reducing collagen synthesis and by enhancing matrix metalloproteinase (MMP) activity in cardiac fibroblasts .