Effects of PAMK on level of serum cytokines and relative mRNA expression of cytokines in geese thymus treated with CTX. Serum levels of (A) GM-CSF (B) IL-1β (C) IL-3 (D) IL-5. Relative mRNA expression of (E) IL-4; (F) IL-6; (G) IL-10; (H) TGF-β; Data are expressed as the means ± SD, n = 9 *P < 0.05, **P < 0.01, ***P < 0.001, compared with C group; #P < 0.05, ##P < 0.01, ###P < 0.001, compared with CTX group.