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Life

Morphing red blood cells help bats hibernate - and we could do it too

Animals that hibernate need a way to keep their blood flowing as their body temperature drops, and it seems that the mechanical properties of red blood cells may be key

By Christa Lesté-Lasserre

22 October 2024

The common noctule bat (Nyctalus noctula) alters its red blood cells during hibernation

Paul Hobson / naturepl.com

Bats modify their red blood cells to become thicker and more rigid when they hibernate – and if we can figure out how, people might one day be able to copy the process for medical treatments or long-distance space travel.

Animals hibernate to conserve energy during cold weather or when food becomes scarce, slowing their heart rate and dropping their body temperature to as low as 5°C (41°F) to enter a state known as torpor. This is only survivable if their blood continues…

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