At one level it was the simple thread of biological function.

But more than that, they serve an important biological function for your eyes.

An island had two sources of energy to power its biological functions.

They are an important part of cell structure and other biological functions in the body.

Our focus has been the biological function of the gene products.

The only significant difference was his lack of biological functions.

The genetic information for every biological function - including whether the person is male or female.

Since then, many other important biological functions have been proposed.

Basic biological functions happened in the course of eight hours.

It is named after the Greek god of marriage and has no known biological function.