Formulations containing bacterial cell wall skeleton

The present invention, bacterial cell wall skeletal components, a freeze-dried preparation containing an oil and a surfactant, the formulation characterized by containing an antioxidant, for example, contain tocopherols as antioxidants, phosphorus by blending an acid salt Kararanaru buffer, containing BCG-CWS and the oil pH of an oil-in-water emulsion obtained by condensing the lyophilized preparation is adjusted to pH5.5~8.5 oil-in-water emulsion formulations and lyophilized formulations, such as the same are provided.