Images Dated 28th September 2004

DNA molecule

DNA molecule. Computer artwork of a molecule of DNA (deoxyribonucleic acid) with the chemical formulas of its components. DNA is composed of two sugar-phosphate backbones (blue) and nucleotide bases (red, yellow, green and purple). There are four different bases: guanine, cytosine, thymine and adenine. DNA contains sections called genes, which encode the body's genetic information

© PASIEKA/SCIENCE PHOTO LIBRARY

TEM of a Borna disease virus, cause of depression

Borna virus. Coloured Transmission Electron Micro- graph of a Borna virus in a tissue culture. The virus causes the fatal Borna disease in horses and may be a cause of human psychiatric diseases such as clinical depression & schizophrenia. The virus has an outer membrane (envelope, yellow). This encloses the genetic material (blue) which is comprised of Ribonucleic Acid (RNA). Borna infects a wide range of creatures, including humans. It infiltrates the nervous system, being particularly found in parts of the brain, such as the hippocam- pus and hypothalamus, which control emotions and desires. Drugs to treat Borna may cure psychiatric diseases. Magnification: x180, 000 at 6x4.5cm size

© DR JURGEN RICHT/SCIENCE PHOTO LIBRARY

True-colour satellite image of northern Scotland

Northern Scotland. Satellite image of northern Scotland. The colours approximate to natural tones. North is at top. The city of Inverness is at lower right, but the rest of the region is sparsely populated. The mainland is largely covered by the Highlands, which contain some of the highest points in the British isles. The rugged coastline includes the Moray Firth sea inlet (at lower right) and the Dunnet Head peninsula (at top right); the latter is the most northerly part of the British mainland. Islands that lie off the mainland's coast include Skye (at bottom right) and Lewis (at upper left). Image taken by a Landsat-5 satellite

© PLANETOBSERVER/SCIENCE PHOTO LIBRARY