November Gallery

Coloured SEM of mitochondria in ovarian cells

Mitochondria. Coloured Scanning Electron Micro- graph (SEM) of mitochondria and smooth endoplasmic reticulum in an ovarian granulosa- lutein cell. The cell occurs in the corpus luteum of the ovary, which develops after ovulation and secretes the hormone progesterone. Mitochondria (pink) are seen sectioned, containing tubular cristae. Active secretory cells have many mitochondria which play a role in cell respiration. Membranes of smooth endoplasmic reticulum (ER, yellow) are also seen; commonly found in secretory cells, ER synthesizes lipids and transports substances around the cell. Magnification: x21, 300 at 6x7cm size. Magnification: x27, 400 at 4x5 inch size

© PROFESSORS P.M. MOTTA, S. MAKABE & T. NAGURO/SCIENCE PHOTO LIBRARY

Formula 1 1994: Australian GP

ADELAIDE STREET CIRCUIT, AUSTRALIA - NOVEMBER 13: Michael Schumacher celebrates championship victory with his team during the Australian GP at Adelaide Street Circuit on Sunday November 13, 1994 in Adelaide, Australia. (Photo by Ercole Colombo / Studio Colombo)

© Motorsport Images

F1, Formula 1, Gp, Portrait