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Science  21 Dec 2007:
Vol. 318, Issue 5858, pp. 1844-1849
DOI: 10.1126/science.318.5858.1844a

Figures

  • New program.

    With the addition of four genes, human skin cells are prompted to act like embryonic stem cells.

    CREDIT: UNIVERSITY OF WISCONSIN, MADISON
  • Debris trail.

    High-energy cosmic rays streaking into Earth's atmosphere shed clues to their source.

    CREDIT: M. SUBBARAO, D. SURENDRAN, AND R. LANDSBERG/KICP/ADLER PLANETARIUM AND ASTRONOMY MUSEUM/UNIVERSITY OF CHICAGO
  • Gotcha!

    Researchers have worked out the architecture of the adrenaline receptor.

    CREDIT: CHEREZOV ET AL
  • Tunable sandwich.

    In lanthanum aluminate sandwiched between layers of strontium titanate, a thick middle layer (right) produces conduction at the lower interface; a thin one does not.

    CREDIT: J. HUIJBEN/UNIVERSITY OF TWENTE
  • Channeled.

    Electrons with spins oriented in opposite directions flow along different paths.

    CREDIT: C. BICKEL/SCIENCE
  • Separate and unequal.

    As a T cell divides, the upper and lower cells sport distinct molecules.

    CREDIT: JOHN T. CHANG
  • Something to Muse on.

    In the brain as in Greek mythology, memory and imagination may be related.

    CREDIT: ARTE & IMMAGINI SRL/CORBIS
  • CREDIT: SOMOS/VEER

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