Micro and nanoparticles of metal from tattoo needles can be deposited in the skin and in lymph nodes. This is the result of researchers from the German Federal Institute for Risk Assessment (BfR)
Tattoo, side effects - Altmeyers Encyclopedia - Department Dermatology
Acquired Immunity in Metal Allergy: T Cell Responses
Allergy risk: Metal particles from tattoo needles detected in the skin for the first time - Particles containing nickel and chromium also enter the lymph nodes
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Explore hypoallergenic tattoo ink that's safe for allergies
Study: Bright Coloured Tattoos May Leak Heavy Metals Into Your Body, Causing Allergic Reactions - WORLD OF BUZZ
Particles from tattoo needles found in lymph nodes
Tattoo needle particles can enter the skin - ECARF
Tattoo diseases – HP Bagpipe
Distribution of nickel and chromium containing particles from tattoo needle wear in humans and its possible impact on allergic reactions, Particle and Fibre Toxicology
Tattoo Needles May Trigger Allergic Reactions - The New York Times
Tattoos – more than just colored skin? Searching for tattoo allergens - Weiß - 2021 - JDDG: Journal der Deutschen Dermatologischen Gesellschaft - Wiley Online Library
Are Some Metals in Tattoo Inks Harmful to Health? An Analytical Approach