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Images Dated 18th February 2003

Available as Framed Photos, Photos, Wall Art and Gift Items

Choose from 49 pictures in our Images Dated 18th February 2003 collection for your Wall Art or Photo Gift. Popular choices include Framed Photos, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.


Salivary gland Featured 18 Feb 2003 Print

Salivary gland

Salivary gland. Coloured scanning electron micrograph (SEM) of a transverse freeze-fractured section through an acinus (large brown circle) in a salivary gland. The rest of the image comprises several other acini surrounding this acinus. Acini are the smallest unit of a gland. They comprise a circular cluster of cells that secrete fluid into a central duct (hole, centre) that leads to larger ducts. These acini are secreting granules (lumps, brown) of mucus, the natural lubricating fluid found in saliva. Each acini is circled by a layer of connective tissue (pink). Saliva is secreted into the mouth to aid digestion and the process of swallowing. Magnification: x1000 at 6x7cm size

© Steve Gschmeissner/Science Photo Library

Historical celestial system Featured 18 Feb 2003 Print

Historical celestial system

Historical celestial system. Illustration of the celestial system proposed by Athanasius Kircher in his 1660 work Iter extaticum coeleste. At top is a map of the spheres surrounding the Earth (centre), including the air, fire and the stars. At bottom is a model of the Earth (centre) with the equator, the tropics of Cancer and Capricorn, the horizon, the poles and the ecliptic (the line along which the Sun, Moon and planets appear to move) mapped onto the sky

© SCIENCE, INDUSTRY & BUSINESS LIBRARY/NEW YORK PUBLIC LIBRARY/SCIENCE PHOTO LIBRARY

Coloured SEM of the head of beetle Sinodendron sp Featured 18 Feb 2003 Print

Coloured SEM of the head of beetle Sinodendron sp

Beetle. Coloured scanning electron micrograph (SEM) of the head of a beetle (Sinodendron cylindricum). It has a prominent horn on its head. Such features are generally used to attract a mate. These beetles are found in moist wooded areas, and live on plant matter, dung and rotting wood. They belongs to the same family (Lucanidae) as the well-known stag beetles. The beetles sense smells with their antennae (yellow, lower right and lower left), while the large compound eyes (one at lower left, red) is the primary organ of sight. There are more than 350, 000 known species of beetle, more than any other animal order on Earth. Magnification: x8 at 5x7cm size. x20 at 5x7

© Andrew Syred/Science Photo Library