the 3,3'-diaminobenzidine ( dab ) -induced density-shift protocol of courtoy , quintart & baudhuin [ ( 1984 ) j. cell biol . 98 , 870-876 ] was used to study the distribution among these three endosomal fractions of two ligands with different intracellular destinations .
C0007634
cell
C0034850
endosomal