False-colour transmission electron micrograph of a section through an eosinophil, a type of white blood cell. Eosinophils possess a large bilobed nucleus (left, yellow & blue) & a cytoplasm packed with specific granules (orange circles). Each granule contains a dense crystalloid of uncertain function & some enzymes, including histaminase. Eosinophil numbers increase in certain parasitic infections & notably, in asthma, where the cell is now regarded as the most important inflammatory factor in tissue damage. Toxic concentrations of eosinophil products have been identified in asthmatic lungs. Magnification: x3125 at 6x4.5cm 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.