FIG. 2.

i.v. IgG binds to Raji cells but not to Ramos cells. Cells were incubated with i.v. IgG or plasma and stained with anti-human IgG-FITC (top panels), anti-human IgM-FITC (bottom panels), or the isotype control mouse IgG1-FITC (gray shading). 2ry Ab, cells incubated only with the FITC-conjugated secondary antibody. The results presented here are representative of those from two identical experiments.