Bacterial cell. Illustration of a typical bacterial cell, sectioned to reveal its internal structures. Bacteria are prokaryotes, simple organisms without a nuclear membrane or membrane- bound organelles. The outermost layers shown here are the capsule (green) with long thin flagellae (pink). Both these structures are only present in some species. The next layers are the cell wall (blue) and the cytoplasmic membrane (orange). Intracellular inclusions (brown) are shown in the cytoplasm (purple). Along the centre of the cell cytoplasm is the nuclear material (black lines).

Photo website with Rights Managed and Royalty Free stock photos, images, illustrations and footage available for download immediately for commercial and editorial uses. Aflo is a leading independent supplier and producer of stock pictures and visual content. Search and find high quality images and video for design, print, web-use and publishing. Buy photos from our extensive collection of model released and property released sports images. Search some of the most beautiful travel and landscape pictures from our own photographers and license from our large collection of content, modern and archive, focusing on Japan. We provide free research. Register for personal account management and for full use of our Stock Photography website and start to download images now.