Fig. 2.

Proportions of (a) CD4⁺ T cells and (b) CD8⁺ T cells in inguinal lymph nodes of arthritis-susceptible DA rats (•) and resistant LEW.1AV1 (○) from induction of oil-induced arthritis (OIA) (day 0 untreated animals) to disease onset (day 15) as determined by flow cytometry analysis. (c) Ratio CD4⁺ T cells/CD8⁺ T cells calculated from (a) and (b). There are significant differences between the groups at all time points in (a): P = 0·009 on day 0, P = 0·009 on day 4, P = 0·03 on day 11 and P = 0·02 on day 15 (n = 5).