Coloured transmission electron micrograph (TEM) of the basal region of a kidney distal convoluted tube cell showing the mitochondria (red) associated with basal infoldings, peroxisomes (blue), nucleus (brown) and cytoplasm (light green). At bottom, the basement membranes of epithelial cells and a blood capillary are seen (pink). The fenestrated capillary endothelium is green.