Tattoo Pigment Travels to Lymph Nodes, Prolonging Inflammation in Mice
TL;DR
A mouse study published in PNAS shows tattoo pigment quickly reaches draining lymph nodes within hours, is taken up by macrophages but not cleared, and sustains inflammatory signals for at least two months. When vaccines were administered into tattooed tissue, the mice exhibited a weaker antibody response, a pattern echoed in cultured human cells, though this is not a conclusion about humans and requires validation through trials.
- Tattoo ink doesn’t just stay in the skin — a PNAS mouse study found pigments can reach nearby lymph nodes soon after contact, damage macrophages, and keep inflammation active for at least two months Space Daily
- Tattoos Affect Your Immune System in Ways Scientists Are Just Beginning to Understand ScienceAlert
- The Hidden Cost Of Ink? How Tattoos Trigger A Lifelong Battle Inside The Body NDTV
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