Fig. 6

Effect of different Ganoderma FIPs on IL-2 (a) and IFN-γ (b) release from mouse splenocytes. PBS and ConA (5 μg mL^− 1) served as negative and positive controls. Final concentrations of different rFIPs were 5 μg mL^− 1. The relative concentrations were calculated from the reading data at 450 nm by ELISA. All data was statistically analyzed through one-way ANOVA. Different letters indicate significance (P < 0.05) and same letters mean the difference is not significant