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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.

from Top Health News -- ScienceDaily https://ift.tt/Csv3O2c