Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
One of these samples from the bark of a single Pacific yew tree was found to be toxic to cells and in 1967 scientists had isolated the active ingredient and named this pure compound, taxol.