Skip to main content
U.S. flag

An official website of the United States government

Scientist Sitting Next to a Biological Safety Cabinet in a Laboratory

Detailed Description

A U.S. Geological Survey scientist sits next to a biological safety cabinet in the cell bioassay laboratory at Columbia Environmental Research Center. Scientists optimized existing endocrine active chemical screening tests to improve their precision, accuracy, and ability to screen more samples in a shorter time-frame.


Public Domain.