Breathing out after birth switches off the ability of tissues to regenerate, a study in mice suggests. But the pathway seems to be reversible.
Taking our first breaths marks the beginning of a new life, yet this may be the very act that limits our ability to grow and heal as adults. Studies in mice have pinned down a newborn’s exhalation of carbon dioxide, immediately after birth, as the starting gun that switches off their cells’ intrinsic ability to regenerate…
Source: NewScientist | Health
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