1. 1) Croteau, R., Kutchan, T.M. and Lewis, N.G. (2000) Natural products (Secondary metabolites). In Biochemistry and Molecular Biology of Plants (eds. Buchanan, B.B., Gruissem, W. and Jones, R.L.). Am. Soc. Plant Physiol., Maryland, pp. 1250–1318.
2. 2) Briskin, D.P. (2000) Medicinal plants and phytomedicines. Linking plant biochemistry and physiology to human health. Plant Physiol. 124, 507–514.
3. 3) Raskin, I., Ribnicky, D.M., Komarnytsky, S., Ilic, N., Poulev, A., Borisjuk, N., Brinker, A., Moreno, D.A., Ripoll, C., Yakoby, N., O’Neal, J.M., Cornwell, T., Pastor, I. and Fridlender, B. (2002) Plants and human health in the twenty-first century. Trends Biotechnol. 20, 522–531.
4. 4) Goto, K. (1964) Sinomenine: An Optical Antipode of Morphine Alkaloids. Kitasato Institute, Tokyo.
5. 5) Zenk, M.H. (1991) Chasing the enzymes of secondary metabolism: Plant cell cultures as a pot of gold. Phytochemistry 30, 3861–3863.