Figure 2. Specificity of circulating GP autoantibodies from the A5 patient to human recombinant NC1 domains of collagen IV tested by indirect ELISA (A) and Western blot (B).
Reactivity of two other GP patients (GP1, GP2) is shown for comparison. The dashed line in A indicates normal human serum threshold determined as mean + 3xSD. Lane M in panel B shows the position of pre-stained protein molecular weight markers.
