Dividing breast cancer cell. Fluorescence light micrograph of a breast cancer cell in metaphase during cell division. The colours show: tubulin (red), mitochondria (green), and chromosomes (blue). This research aims to understand the role of mitochondria in tumour cell division, which may lead to the development of new therapeutic targeting strategies to stop tumour cell growth. This is a triple-negative breast cancer cell (MDA-MB-231).