cytoadherent irbcs from two different cloned isolates had large ( mr greater than 2.4 x 10 ( 5 ) radioiodinatable proteins that differed in size between the isolates but had in common the biochemical properties of trypsin sensitivity and insolubility with triton x-100 . the proteins were not detected with uninfected erythrocytes , indicating that they were parasite determined , nor were they detected with irbcs containing parasites cultured for many months without selection . with continued selection for the cytoadherent phenotype , additional irbc surface proteins with larger molecular sizes ( mr 2.9 x 10 ( 5 ) and 3.2 x 10 ( 5 ] appeared .
C0033684
proteins
C0025252
surface proteins