204 place 2

430 Scientists discover how life experiences rewrite the immune system

ScienceDaily
ScienceDaily · 02/11/2026 00:02 EDT

Why does the same virus barely faze one person while sending another to the hospital? New research shows the answer lies in a molecular record etched into our immune cells by both our genes and our life experiences. Scientists at the Salk Institute have created a detailed epigenetic map of human immune cells, revealing how inherited traits and past exposures—like infections, vaccines, or even environmental chemicals—shape immune responses in different ways.

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