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All Chemicals: 2
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# Activity Chemical Low PPM High PPM StdDev *Reference
22 BETULINIC-ACID Stem Bark 76.2 77.6 -0.4 Jim Duke's personal files.
13 BETULIN Stem Bark -- 47.6 -0.35 Jim Duke's personal files.
*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.