woman celebrates 104th birthday

Sadie Mintz (right) celebrated her 104th birthday at the Claude Pepper Senior Center in Los Angeles on February 25, 2011. Genes probably have some role to play in longevity, but scientists don't know exactly how. On Thursday, citing technical errors with their experiment, a team from Boston University retracted a 2010 study linking specific gene variants to living past 100.
Francine Orr / Los Angeles Times
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