Here’s 1981 b-roll of a laboratory at the National Institutes of Health, which is located in Bethesda, Maryland. 

A young man in a lab coat uses a microscope. Another man, who is off-screen, tells the young man how to use the device. 

A young woman in a lab coat sets up a sample station, then walks away. 

A man wearing a black sweater sits at a safety hood, retrieving samples from a flask.

A woman in a lab coat works at a safety hood. We see close-ups of her hands retrieving red liquid from flasks and bottles and other equipment.