All moral rights asserted. Recolouring or alteration of the image is prohibited without permission. Coloured scanning electron micrograph (SEM) of the soil proteobacterium Chromobacterium vaccinii. These bacteria produce a natural insecticide known as FR900359. FR900359 is being investigated as a potential drug and has been shown to be effective against asthma and certain types of cancer, including choroidal melanoma, in cell and mouse models. Magnification: x20,000 when printed at 15 centimetres wide.