As a prerequisite for their survival, thermophiles contain enzymes that can function at high temperature.

The goose's liver contains enzymes which are able to catalyze nuclear reactions.

The body contains enzymes" specifically designed to catalyze the destruction of hormones.

Each region contains different enzymes which selectively modify the contents depending on where they reside.

They can vary in number and shape and contain numerous enzymes that are released during the penetration process.

This medication contains digestive enzymes, which are natural substances needed by the body to help break down and digest food.

The saliva contains enzymes that predigest the tissues they swallow.

Breast milk also contains growth factors, enzymes, hormones and other substances that may aid an infant's development.

It could also contain cells or enzymes of some type.

Other species contain enzymes that are biological control agents.