Images Dated 20th December 2002
Choose from 10 pictures in our Images Dated 20th December 2002 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.
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19991 British Touring Car Championship Will Hoy World Copyright: LAT Photographic
Motorsport Images
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A Coast Guard HH-65A Dolphin rescue helicopter in flight
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Featured 20 Dec 2002 Image
Blue-green alga, Spirulina platensis
False colour transmission electron micrograph of the blue-green algae, Spirulina platensis. Here, a single cell of this species is seen. Blue-green algae (cyanobacteria) are primitive algae. Their internal structure is closely related to bacteria. They are prokaryotic organisms which contain no membrane-bound nucleus; instead, as in bacteria, their nuclear material is dispersed throughout the cell. Photosynthetic lamellae (thread-like structures) are the primitive equivalent of chloroplasts. The red spots are food reserves known as cyanophycin granules. Some Spirulina species are eaten as a protein-rich health food. Magnification: x6660 at 6x4.5cm size
© A.B. DOWSETT/SCIENCE PHOTO LIBRARY