expedition 22

Expedition 22 was the 22nd long duration crew flight to the International Space Station (ISS). This expedition began in November 2009 when the Expedition 21 crew departed. For a period of 3 weeks, there were only 2 crew members; it was the first time that had happened since STS-114 had delivered a third person to restore the ISS crew to 3. Commander Jeff Williams and flight engineer Maksim Surayev were joined by the rest of their crew on 22 December 2009, making the Expedition 22 a crew of five.
The expedition ended when Soyuz TMA-16 undocked on 17 March 2010, and was immediately followed by the start of Expedition 23.

This version of the A-B Emblem patch includes the names of the crew members. 

Expedition 22 was the 22nd long duration crew flight to the International Space Station (ISS). This expedition began in November 2009 when the Expedition 21 crew departed. For a period of 3 weeks, there were only 2 crew members; it was the first time that had happened since STS-114 had delivered a third person to restore the ISS crew to 3. Commander Jeff Williams and flight engineer Maksim Surayev were joined by the rest of their crew on 22 December 2009, making the Expedition 22 a crew of five.
The expedition ended when Soyuz TMA-16 undocked on 17 March 2010, and was immediately followed by the start of Expedition 23.

TROPI, or "Analysis of a Novel Sensory Mechanism in Root Phototropism", is an experiment on the International Space Station (ISS) to investigate the growth and development of plant seedlings under various gravity and lighting combinations. It was launched on Space Shuttle Endeavour during the STS-130 mission and was performed on the ISS during Expedition 22. Frozen plant samples from the TROPI experiment were returned on the landing of the STS-131 mission on Space Shuttle Discovery.