Images Dated 21st March 2003
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Choose from 54 pictures in our Images Dated 21st March 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.
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Featured 21 Mar 2003 Print
Coloured X-ray of an impacted wisdom tooth
Impacted wisdom tooth. Coloured X-ray of teethin the lower left jaw of a patient, showing animpacted wisdom tooth. Normal molar teeth are seenat right (orange) with amalgam fillings in theircrowns (blue). At lower left is a wisdom toothgrowing horizontally, and which has impacted ontothe second molar lying beside it. Adults have fourwisdom teeth (also known as third molars) at theback of each row of teeth. They erupt between theages of 17 and 21. Impacted wisdom teeth maypenetrate the gum incorrectly, or may push otherteeth out of alignment. An impacted wisdom toothsuch as this one may have to be surgicallyremoved
© Alfred Pasieka/Science Photo Library
Featured 21 Mar 2003 Print
Cryptic katydid insect on a fern leaf
Katydid. Macrophotograph of a cryptic katydid insect (family Tettigoniidae) on a fern leaf. The leaf green colour (cryptic colouration) of this katydid, and the plant-like spines on its body and legs, serve as an example of camouflage in nature. The katydid can hide very well amongst leaves and scrub, which helps it to avoid the attention of predators. Katydids are large grasshopper-like insects in which sound communication is well-developed. They mostly feed on plants. In tropical forests (such as this one in Ecuador) adaptations in camouflage are abundant. The name "katydid" is an imitation of the noise the insect makes
© DR MORLEY READ/SCIENCE PHOTO LIBRARY
Featured 21 Mar 2003 Print
Lungs, CT scans
Lungs. Sequence of six coloured axial CT (computed tomography) scans through the upper chest of a 52- year-old woman. The front of the chest is at top, and the right of the body is at left. The sequence moves down through the body as it runs from left- right along top then bottom. The two lungs (dark blue) and their branching airways (bronchioles, light blue) are separated by the mediastinal area (centre). This contains the trachea (blue circle) that splits into the two lung bronchi (images 4- 6). Major blood vessels (orange, upper centre) lead to the top of the heart (seen in images 4-6). The bone (dark orange) of the spine (lower centre) and ribs (surrounding the lungs) is also seen
© PASIEKA/SCIENCE PHOTO LIBRARY
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