the observation that protein-a conjugated gold sols bound to fibronectin-collagen ( fnc ) fibres in human fibroblast cultures prompted a series of studies on the binding of gold particles stabilized in various ways ( staphylococcal protein a , bovine serum albumin , avidin , streptavidin , gelatin , hemoglobin , polyethylene glycol ( mw 20 000 ) , methylcellulose and the nonionic detergent tween 20 ) to cell and tissue components , to protein dot blots and sds-page blots on nitrocellulose paper .
C0016030
fibroblast
C0007634
cell