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Home > All Images > 2003 > February > 18 Feb 2003

Images Dated 18th February 2003

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

Choose from 45 pictures in our Images Dated 18th February 2003 collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, 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

Lung airways, coloured X-ray Featured 18 Feb 2003 Print

Lung airways, coloured X-ray

Lung airways. Coloured chest X-ray showing thebranching airways (white/brown) in a healthy rightlung. The trachea (windpipe, top right) dividesinto two main bronchi, one of which enters eachlung. Each bronchus then splits further intosmaller bronchi and finally bronchioles thatterminate in clusters of alveoli (air sacs, notseen). The alveoli are the site of gas exchangebetween inhaled air and the blood. They aresurrounded by thin-walled blood vessels, ensuringthat the exchange of oxygen and carbon dioxide israpid and complete

© Gjlp/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