the behavior of 125i-labeled c3b incubated with two c3b receptor-positive cells ( human erythrocytes and the b lymphoblastoid raji line ) , one c3b receptor-negative cell ( t lymphoblastoid cem line ) and solubilized membranes from each cell was analyzed by sucrose density gradient ( sdg ) and sodium dodecyl sulfate polyacrylamide gel electrophoresis .
C0007634
cell
C0007603
membranes