A lot of living to do.

Regarding "Living Long on Less? Mouse and human cells respond to slim diets" (SN: 3/10/07, p. 147), what were the ages of the people in the study?

HENRY DIETER WEINSCHEL,

LAS CRUCES Las Cruces (läs kr

`sĭs), city (1990 pop. 62,126), seat of Dona Ana co., SW N.Mex., on the Rio Grande, in a farm area irrigated by the Elephant Butte system; founded 1848, inc. 1907. , N.M.

The participants, whose muscle cells showed several more-youthful signs if they ate fewer calories, were 35 to 38 years old.

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Title Annotation:	LETTERS
Author:	Barry, P.
Publication:	Science News
Article Type:	Letter to the editor
Date:	May 12, 2007
Words:	56
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