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mitochondria

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developmental biology

What Makes Life Tick? Mitochondria May Keep Time for Cells

By Viviane Callier
September 18, 2023
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Every species develops at its own unique tempo, leaving scientists to wonder what governs their timing. A suite of new findings suggests that cells use basic metabolic processes as clocks.

The Joy of Why

Why Do We Get Old, and Can Aging Be Reversed?

By Steven Strogatz
July 27, 2022
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Everybody gets older, but not everyone ages in the same way. In this episode, Steven Strogatz speaks with Judith Campisi and Dena Dubal, two biomedical researchers who study the aging process.

Micrograph of a macrophage phagocytosing bacteria.
evolution

Ancient Genes for Symbiosis Hint at Mitochondria’s Origins

By Veronique Greenwood
April 26, 2022
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Was the addition of mitochondria a first step in the formation of complex cells or one of the last? A new study of bacteria tries to answer this contentious question in evolutionary biology.

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