Macrophotograph of an inflorescenece (flowering shoot) of the cocksfoot grass Dactylis glomerata, showing pollen-bearing anthers (tiny boat-shaped structures) dangling from individual flowers. Cocksfoot pollen, a summer grass pollen abundant in June, is a cause of hay fever (medical term Allergic rhinitis & pollenosis). Sufferers produce a sensitising antibody, immunoglobin E (IgE), which attaches to cells in the nose & eyes. It reacts with inhaled pollen (allergen) causing the release of various chemicals, including histamine. Histamine causes the mucous membranes of the nose, eyes & throat to swell & become inflamed, bringing on the familiar hay fever symptoms. Mag:X2 (35mm).

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.