Breast tumour microenvironment. Fluorescence light micrograph of breast cancer cells stained with six primary antibodies to show the contrast between the supportive tissue (or stroma) and the tumour microenvironment (TME). This environment plays a crucial role in helping cancers to grow and evade destruction. The colours are: stroma (green, red, and yellow), tumour (pink, orange, and purple), and DNA in cell nuclei (blue).