Horse fly eye, SEM

Horse fly eye, SEM

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Caption: Horse fly eye. Coloured scanning electron micrograph (SEM) of the compound eye of a horse fly (Tabanus sp.). The eye is composed of numerous facets (ommatidia), each of which contains a lens. Beneath each lens are retinal cells, which send nerve signals to the optic nerve. Each ommatidium gives a tiny image of part of the horse fly's field of vision, resulting in a detailed mosaic image. Female horse flies feed on the blood of horses, humans and other large mammals. Magnification: x90 at 6x7cm size.

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Keywords: anatomy, animal, coloured, compound, eye, facet, facets, horse fly, horsefly, insect, insecta, invertebrate, invertebrates, lens, lenses, many, multiple, nature, ommatidia, ommatidium, scanning electron micrograph, sem, sense, sensory, sight, tabanus sp., vision, visual, wildlife, zoology

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