FIG. 2.
Analysis of antibody specificities in fraction 1 (A) and fraction 2 (B). The fractions were each diluted 640-fold and preincubated with the recombinant antigens R0 (open symbols) of R2 (filled symbols) at the indicated concentration before addition to wells coated with R0 (squares) or R2 (triangles). The key indicates the competing antigen (solution) and the solid-phase antigen (ELISA) used for each curve. Please note that the curves do not originate from the same point on the ordinate since competing antigen was already added at this point.