Data Views Exclude Ubiquitous Chemicals Activities: 13 Chemicals w/Activities: 3 CSV Excel PDF All Chemicals: 8 Click on column headings to sort table by that column # Activity Chemical Part All Bark Leaf Plant Stem Low PPM High PPM StdDev *Reference 1 1 CEPHALOTAXINE Stem -- -- * 12 12 HOMOHARRINGTONINE Stem -- -- * 2 2 ISOHARRINGTONINE Stem -- -- * *Unless otherwise noted all references are to Duke, James A. 1992. Handbook of phytochemical constituents of GRAS herbs and other economic plants. Boca Raton, FL. CRC Press.