Nimbolide,anaturaltriterpenoidpresentintheediblepartsoftheneemtree(Azadirachtaindica),wasfoundtobegrowth-inhibitorChemicalbookyinhumancoloncarcinomaHT-29cells.Nimbolidetreatmentofcellsat2.5-10μMresultedinmoderatetoverystronggrowthinhibition.