For a cosmeceutical to squeak past that ruling, it cannot alter the structure or function of the skin.

He also accepts that some evolutionary changes in molecules do alter function, and are likewise selected.

This can alter host metabolism or function in unexpected ways.

Addiction is a disease which alters the structure and function of the brain.

Drugs are any substance that, when absorbed into the body of a living organism, alter normal bodily function.

These potential isoforms may have altered biological function due to the loss of domain specific interactions.

These modifications often alter the structure and function of the protein.

For example, a tumor-suppressing gene might be turned off, altering normal immune function in preventing cancer growth.

These granulomas may alter the structure and function of the affected organ(s).

This level of nicotine in children can permanently alter brain structure and function.