Rick Mastracchio, Expedition 38 flight engineer, prepares to replace a dewar tray in the Minus Eighty Laboratory Freezer for ISS (MELFI) after inserting biological samples.
ISS038-E-006765 (21 Nov. 2013) — In the International Space Station’s Destiny laboratory, NASA astronaut Rick Mastracchio, Expedition 38 flight engineer, prepares to replace a dewar tray in the Minus Eighty Laboratory Freezer for ISS (MELFI) after inserting biological samples into the trays.