One of the two German CellBox experiments focuses on thyroid cancer cells. This involves studying cellular and molecular changes in these cells that occur as a result of the absence of gravity. Doctors at the University of Magdeburg want to use this knowledge to find new therapeutic methods for combatting tumours. In zero gravity, the cancer cells form three-dimensional spherical agglomerations (spheroids) consisting of thousands of tumour cells that resemble the original tumour.