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Images Dated 4th March 2004

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

Choose from 81 pictures in our Images Dated 4th March 2004 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.

Pubic louse, SEM Featured 4 Mar 2004 Print

Pubic louse, SEM

Pubic louse. Coloured scanning electron micrograph (SEM) of a pubic louse (Phthirus pubis), also known as the crab louse, clinging to human hair. An infestation of P. pubis causes pediculosis, the symptoms of which are severe itching and a rash. The lice feed by sucking blood and are spread through sharing bedding and clothing, or by sexual contact. Each of the louse's six legs ends in a massive claw, which folds inward to meet a thumb- like projection on the opposite side. These claws allow the louse to climb and swing through its hairy habitat, locking into position when disturbed. Magnification: x60 when printed 10cm wide

© E.Gray/Science Photo Library

Atherosclerosis Featured 4 Mar 2004 Print


Atherosclerosis. Artwork of a human heart showing narrowing of the coronary arteries due to atherosclerosis, a build up of fatty deposits (atheroma, yellow) on the artery wall. The large red vessel is the aorta, the main artery carrying blood from the heart to the body. Two coronary arteries arise from the aorta and supply the heart muscle with oxygen. The left coronary artery (on the right) divides into the anterior descending and circumflex branches. Coronary artery disease is the most common cause of death in developed countries. The narrowing causes abnormal clotting, which blocks the vessel and starves the heart's muscle of blood, causing a heart attack


Volcano caldera formation Featured 4 Mar 2004 Print

Volcano caldera formation

Caldera formation. Artwork of the formation of a caldera, a large basin-shaped volcanic depression. Calderas may form when a volcano (top) undergoes a massive eruption (upper centre). This creates a much larger crater than the original volcanic vent (lower centre). Alternatively, the volcano may collapse inwards. Over time the magma chamber beneath the caldera solidifies and the volcano becomes dormant or extinct. The caldera may then fill with water to form a lake (bottom). Renewed volcanic activity may lead to the formation of new volcanic cones within the caldera. A well- known caldera lake is Crater Lake in Oregon, USA, which is more than 600 metres deep