• Scientists now know why tattoos last a lifetime

    6 monthes ago - By Fast Company

    Scientists at the Immunology Centre of Marseille-Luminy in France have discovered that the immune cells, called macrophages, that eat the ink injected into your skin recycle the pigments to new cells when they die, reports Nature. When macrophages die, they release the pigment, which is then ingested by neighboring macrophages. The scientists carried out the...
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