Figure 3

(A) SDS-PAGE of purified recombinant human MX1. (B) Patients’ sera were diluted 1:100, 1:50, or 1:25. In the ELISA system we developed, reactivities increased in a concentration-dependent manner in four anti-MX1 autoantibody–positive sera (left panel), but not in three anti-MX1 autoantibody–negative sera (right panel).