Scientists are working on medicines based on natural substances which may help prevent cancer.
A new research has described how scientists, sifting through natural products from fruits and vegetables, have narrowed down the list to certain products such as resveratrol, a substance found in red wine.
Other possible choices include abyssinone, a substance found in a plant from traditional Chinese medicine.
Scientists are also studying potential cancer-preventing substances in deep-ocean microbes.
The article appears in the current issue of Chemical and Engineering News (C and EN).
C and EN Associate Editor Carmen Drahl cites continued optimism that the search will pay off, even though some natural products have failed to prevent cancer in human clinical trials.