STS089-390-008 (22-31 Jan 1998) --- Astronauts David A. Wolf (right), newly a member of the Space Shuttle Endeavour STS-89 crew; and Andrew S. W. Thomas, his cosmonaut guest researcher replacement on the Russia?s Mir Space Station, Mir-24 crew, check out the CoCult hardware, a Mir tissue experiment. Wolf is holding a sample display from the hardware.