False-col SEM of two pollen grains

False-col SEM of two pollen grains

B786/0317 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 51.6MB

Downloadable file size: 2.1MB

Price image Pricing

Please login to use the price calculator


Caption: False-colour scanning electron micrograph (SEM) of two pollen grains of cocksfoot grass, Dactylis glomerata, a major cause of hay fever (allergic rhinitis). The pit on the right-hand grain is the germination pore, out which the pollen tube grows. Cocksfoot pollen is a wind-dispersed summer pollen. Hay fever sufferers produce a sensitising antibody, immunoglobin E (IgE), which attaches to cells in the nose & eyes. It reacts with inhaled pollen, 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 symptoms of hay fever. Magnification: x570 at 6x4.5cm size. JBU colouring: green & yellow. BW original is B786/073.

Release details: Model release not required. Property release not required.

Keywords: allergic rhinitis, botany, cause, cocksfoot grass, cocksfoot pollen, dactylis glomerata, germinating pore, hay fever, hayfever, jbu colouring, nature, plant, plants, pollen, pollinosis, reproduction, reproductive

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.