Images Dated 7th January 2002

Muscle fibres

Muscle fibres. Computer-enhanced confocal light micrograph of skeletal (striated) muscle fibres. Skeletal muscle is under the conscious control of the brain. The fibres have dark bands running across them. Each fibre comprises several parallel strands (myofibrils) of the contractile proteins actin and myosin. These are arranged alternately along the length of the fibre, giving it a banded appearance. When the muscle contracts, the actin and myosin filaments slide over one another. Magnification unknown

© DAVID BECKER/SCIENCE PHOTO LIBRARY

White-breasted Nuthatch climbing down Tree (Sitta carolinensis), Michigan

White-breasted Nuthatch climbing down Tree (Sitta carolinensis), Michigan, Kensington Metropark

© Stachecki, James J. / Animals Animals/Earth Scenes

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Formula One World Championship: Mercedes trucks line up in immaculate formation

Mercedes trucks line up in immaculate formation. These transporters haul the FOCA Digital Television equipment to the Formula One races.
British Grand Prix, Silverstone, England. 15 July 2001

© Sutton Motorsport Images