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June 7, 2011
Astronaut Dafydd R. (Dave) Williams (bottom), STS-90 mission specialist representing the Canadian Space Agency (CSA), serves as a test subject in the Lower Body Negative Pressure (LBNP) device, while payload specialist Jay C. Buckey Jr. (left) monitors the run. Payload specialist James A. (Jim) Pawelczyk is in the background. Neurolab crewmembers spend many hours running tests with the LBNP device, a key element of the autonomic nervous system hardware built by the German Space Agency (DARA).

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