Corrections and Clarifications

The Research News article "Obesity sheds its secrets" by Trisha Gura (7 Feb., p. 751) erroneously attributed the initial cloning of the agouti gene to Bill Wilkison's team at Glaxo Wellcome in Research Triangle Park, North Carolina. The mouse version of the gene was instead cloned in 1992 by Richard Woychik at the Oak Ridge National Laboratory in Oak Ridge, Tennessee, and his colleagues Scott Bultman and Edward Michaud. Woychik also collaborated with Wilkison on the 1994 cloning of the human agouti gene.

The Introduction to the Letters section of 13 December (p. 1821) should not have implied that the quartz spear point shown on the cover of the 19 April 1996 issue (and reprinted with the Introduction) was found at the excavation at Caverna da Pedra Pintada at Monte Alegre in the Brazilian Amazon. The point was found at a nearby site on the Tapajós River.

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Volume 275, Number 5308, Issue of 28 March 1997 pp. 1861-1865.
©1997 by The American Association for the Advancement of Science.