|Photo by Harry F. Holloway, CCP and Jeff McAdams. Courtesy of Carolina Biological Supply Co.|
Tobacco callus serves as the starting material for cell culture.
Of the many antitumor agents extracted from plants over the years, the most famous example comes from the bark of the Pacific yew tree. Paclitaxel was isolated in the early '70s, underwent clinical trials in the '80s, and was approved by the Food and Drug Administration (FDA) in 1992.1 Paclitaxel is the...
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