A detoxified, nonspecific immunostimulant consisting of a combination of the active monophosphoryl lipid A component of lipopolysaccharide (LPS) isolated from the bacterium Salmonella minnesota combined with a residue of the cell wall of the bacterium Mycobacterium phlei. Detox-PC differs from Detox adjuvant and Detox-B in that Detox-PC contains egg phosphatidylcholine and alpha-tocopherol. (NCI04) [ ]