Multicellular spheroid

This is a 3D sphere of cancer cells created in the lab for studying the effect of radiotherapy. Cancer cells grown on a flat surface, which is often done in laboratories, behave differently than cells in real patient tumors. To study the effect of irradiation our researchers create cancer cell spheroids. In this image red dots are formed in cells that have been damaged by radiotherapy. Green dots show low oxygen cells, orange multiplying cells.