False-colour scanning electron micrograph of a neutrophil, the most common type of leucocyte (white cell) in blood. Neutrophils are formed in the bone marrow and use the blood as a transport system to reach sites of infection in the tissues, where they engulf invading micro-organisms. They constitute 40 to 75 per cent of circulating leucocytes. A neutrophil has a single, highly lobulated nucleus. In the mature neutrophil there are usually five lobes connected by fine strands of nuclear material, but in immature cells the nucleus is generally less lobulated. Magnification: x4800 at 6x7cm size.

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.