However, the tree's bark also contains brucine and other poisonous compounds.

Plants contain poisonous compounds, so that they are not edible.

This is the first known example of a non-human mammal acquiring a poisonous compound from another species and using it for its own defense.

Today all of our water has small, but ever-increasing levels of mercury, lead, and other even more poisonous compounds.

Other poisonous or toxic compounds, alkaloids and glycosides, are also very common.

The palila and the moths, however, have evolved the ability to deal with the poisonous compounds.

These natural toxins include some of the most poisonous compounds known.

Some insects secrete poisonous compounds that kill or drive away the parasitoid.

The reaction produces hydrogen sulfide gas and other poisonous compounds.

The ciguatoxins are a class of poisonous organic compounds found in some fish that cause ciguatera.