The two cell cultures developed by German scientists at the University of Magdeburg will be subjected to microgravity conditions on the ISS – their 'habitat' is the smartphone-sized CellBox experiment chamber. The chamber with the pumps and tanks for nutrient and fixer solutions for the cells is visible in the image. After 30 days in space, the cell cultures are due to be brought back to Earth aboard the Dragon capsule; scientists will then analyse the samples in their home labs.