With less than six months to his launch to the International Space Station, ESA astronaut Andreas Mogensen is at the European Astronaut Centre in Cologne, Germany, where he is learning more about some of the experiments he will be performing during his Iriss mission. One of the physiology experiments he will conduct looks at endothelial cells. In this video Andreas talks to astronaut trainer Elisabeth to find out more.
 
 Andreas is currently training for his 10-day Iriss mission to the International Space Station, set for launch in September 2015.
 
 Connect with Andreas at andreasmogensen.esa.int