Maturin acetate from Psacalium peltatum (Kunth) Cass. (Asteraceae) induces immunostimulatory effects in vitro and in vivo

► Maturin acetate stimulates the proliferation of murine macrophages and splenocytes. ► Maturin acetate induces lysosomal enzyme activity, pinocytosis and NK cell activity. ► Maturin acetate increases the release of IL-2, IL-15 and IFN-γ in immunosuppressed mice. ► Maturin acetate exerts immunostimulatory activities in vitro and in vivo.