STS-90
The goals of Neurolab were to study basic research questions and to increase the understanding of the mechanisms responsible for neurological and behavioral changes in space.Primary goals were to conduct basic research in neurosciences and expand understanding of how the nervous system develops and functions in space.Research conducted as planned, with the exception of the Mammalian Development Team, which had to reprioritize science activities because of the unexpected high mortality rate of neonatal rats on board.Other payloads included the Shuttle Vibration Forces experiment, the Bioreactor Demonstration System-04, and three Get-Away Special (GAS) canister investigations.Working with engineers on the ground a week into the flight, the on-orbit crew used aluminum tape to bypass a suspect valve in the Regenerative Carbon Dioxide Removal System that had threatened to cut short the mission.