Fig. 4

Evolution over time of serum anti-TWEAK auto-antibody titers in positive PsoA patients. a Titers of auto-antibodies have been obtained by serial dilutions (1:50, 1:100, 1:200, 1:400, 1:800, 1:1000) of screening positive samples (n = 9) tested with our home made western blot assay using recombinant human TWEAK. Samples with titers above 1000 are indicated by a grey arrow. b The images of each membrane according to the serial dilution are represented for a patient exhibiting TWEAK-binding IgG at a titer of 800