Figure 5: Representative Western blot comparative analysis between Sjögren’s syndrome patients (pSS), non-SS sicca syndrome patients (CTL), and healthy control subjects (HC). a) acquisition of total protein content run during 1D SDS-electrophoresis, after the stain-free gel was UV-activated; b) acquisition of immunoreactive GCDFP-15/PIP band on a nitrocellulose film.