( 1 ) a disulfide-linked 140 kda protein found in rtasm cells which was reduced by sulfhydryl reagent dithiothreitol ( dtt ) to a 70 kda band , ( 2 ) a disulfide-unlinked 120 kda protein , specific to mdck cells whose mr was not reduced by dtt and ( 3 ) a 68-70 kda protein prevalent in both rtasm and mdck cells whose mr was not reduced by dtt .
C1135918
rtasm cells
C1267092
rtasm