gland

A gland is a group of cells that produce and secrete substances. There are many different types of glands in the body, and they produce a variety of substances.

Some glands produce hormones, which are chemicals that control the body's functions. Other glands produce enzymes, which are proteins that help to break down food. Still, other glands produce mucus, which is a slimy substance that helps to protect the body's tissues.

Glands are found all over the body, and they play an important role in keeping the body healthy.

The patient has a swollen gland in their neck.