Low voltage increases image contrast which is especially important for biological specimens.

The Sow has several interesting biological specimens on its surface.

A number of different biological specimens were used, including rodents.

This applies to both physical and biological specimens (see Applications).

Those who package and transport biological specimens require special training.

Joel used her as a test subject and a biological specimen in his research.

All biological specimens are now kept under strict lock and key.

"We finally have a biological specimen, which is what the captain has wanted."

We expect to get a report soon on that biological specimen.

They arrived on time, only to be told that the station did not accept biological specimens after all.