Hayflick, Leonard

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Leonard, U.S. microbiologist, 1928–.
Hayflick limit - the limit of human cell division in subcultures.
References in periodicals archive ?
Leonard Hayflick discovered that cells growing in laboratory cultures possess a species-specific limit to the number of times they will reproduce by cell division.
San Francisco's Leonard Hayflick recently told The Washington Post, "There is no intervention that has been proven to slow, stop, or reverse aging.
About four decades ago Leonard Hayflick and Paul S.
It was only in the late 50s, for example, that Leonard Hayflick demonstrated that human cells-with the notable exception of cancer cells-replicate a maximum of 50 times.
The speakers included Leonard Hayflick, PhD, Robin Holliday, PhD, Steven Austad, PhD, and Thomas Kirkwood, PhD.
Leonard Hayflick, professor of anatomy, University of California, San Francisco, School of Medicine, who reviewed the biology of aging and current studies geared toward better understanding the aging process.
In 1962, Leonard Hayflick of the Wistar Institute in Philadelphia reported that human cells maintained in a test tube undergo a finite number of doublings, about 50, before they enter a nondividing stage of life known as senescence.
This study represents a milestone in our efforts to understand how mammalian longevity is determined," said Leonard Hayflick, Ph.
A series of elegant and now classic experiments by the biologist Leonard Hayflick in the 1950s showed, in fact, that there is a limit to how many times human somatic cells can reproduce in vitro before they simply stop.
Cupit, PharmD, Vice President Global Business Development & Licensing, Novartis Pharmaceuticals; Jean-Sylvain Demelier, Director, International Strategic Marketing, Bayer; Frederick Frank, Vice Chairman, Lehman Brothers; Leonard Hayflick, PhD, Professor of Anatomy, Department of Anatomy, University of California, San Francisco, School of Medicine; J.