Microgravity Experiment Research Locker/Incubator (MERLIN) was designed by University of Alabama at Birmingham (UAB) Center for Biophysical Sciences and Engineering (CBSE) to operate as a hardmounted, single middeck locker equivalent within the ISS EXPRESS rack, the Space Shuttle, SpaceX Dragon, and Cygnus (spacecraft) .
It is used to provide a temperature controlled environment for scientific experiments between -20 °C and 48.5 °C.
MERLIN is also used to Support Crew Galley Operations.
[1] MERLIN is one of multiple units available for storage on the ISS and/or transportation to and from the ISS.