Fig. 1From: An extract from the frass of swallowtail butterfly (Papilio machaon) larvae inhibits HCT116 colon cancer cell proliferation but not other cancer cell typesOutline of this study. P. machaon larvae ate three kinds of host plants, and then the metabolites were extracted from the frass of each host plant group using three kinds of organic solvents, and the fractions were separated using open column chromatography. The fractions were examined for biological activity using human cancer cell linesBack to article page