Astronauts, rodents and jellyfish were the subjects during extensive medical tests performed aboard the first Spacelab Life Sciences mission launched in June 1991 aboard shuttle Columbia. A space laboratory module riding in the payload bay housed the experiment facilities. The crew of STS-40 explain the mission in this post-flight film.
Source: NASA-JSC (19 min 9 sec QT 6 Dialup file)
Download this clip to your hardrive.
(Windows users right-click this link. Mac users control-click this link)