K/BxN mice were treated with Carrier, MTX alone (1mg/kg), 1MT alone (400mg/kg), or MTX + 1MT from 3–6wk of age. (A) Serum anti-GPI Ig titers were measured using an ELISA assay. The graph shows the mean titer ± SEM from n=16 Carrier, n=10 1MT, n=14 MTX, and n=14 MTX+1MT treated mice, pooled from 3 independent experiments. (B) Antibody Secreting Cells (ASCs) from the joint draining LN were measured using an ELISpot assay. The graph represents the mean number of ASCs ± SEM from n=13 Carrier, n=10 1MT, n=18 MTX, and n=14 MTX+1MT treated mice, pooled from 3 independent experiments. *p<0.05, **p<0.01, n.s., not significant.