This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
NIH Clinical Center Special Clinical Studies Unit. en National Institutes of Health Clinical Center Special Clinical Studies Unit SCSU specialized biocontainment patientcare unit The negativepressure anterooms on the left take note of the white room pressure monitor at the upper right side of the door frame lead to negativepressure