I am used to using living species to work for me.

Other species have been used, but not by far to the same extent as these three.

However, many species have long been used in traditional medicine.

Some marine species in particular have been used as study systems.

The second species might potentially be used for biological control.

The species is high in nutrition and can be used for cooking.

Over 1000 species of insects are, or have been used as food somewhere in the world.

Several species of this group are used to alleviate pain.

This species of fish is not used in the markets for consumption.

More than 200 species of wild plants can be used in Chinese medicine.