Fig. 4.
Affinity purification of infected erythrocyte membrane proteins by heparin–Sepharose.
Cell extracts of surface 125I-labeled FCR3S1.2 pRBC were incubated with Sepharose-linked heparin and the bound fraction analyzed by SDS-PAGE as described in “Materials and methods.” The specificity of binding was assessed by competition with the indicated amounts of soluble heparin, HS and CSA.