(1) Objective To investigate the inhibition effect of Limax extract(LE) in the growth of human lung cancer A549 cell line in vitro and tumorigenicity in mice.

(2) The sources of species collects out door, Amoeba Limax is cultured un der constant temperature in doors.

(3) Objective: To study the inhibitive effect of Limax extract on H14 and inducement effect of apoptosis and differentiation of H14 cells in vitro.

(4) Methods:TCL method was used to identify Limax flavus Linnaeus, Radix Ginseng, Radix Notoginseng, Rhizoma Corydalis in the Xianlong Kangan Capsules.

(5) Objective:To study the in-vitro inhibitory of limax polysaccharide on hepatitis B virus.