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The study shows that mammalian immune cells display a lower activation rate when exposed to peptides containing amino acids that are rare on our planet but are “commonly found on meteorites”.

The immune systems of terrestrial mammals may be hard-pressed to detect and combat germs from beyond our planet, which could be based on amino acids different from those of lifeforms on Earth, phys.org reports citing a new study conducted by scientists from the universities of Aberdeen and Exeter.

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Category: Science