DNA-vaccination via tattooing induces stronger humoral and cellular immune responses than intramuscular delivery
https://archive.ph/S2ciBtattooing devices have been used in medical research for the delivery of various materials to the skin for different purposes, e.g. ... viruses to induce papillomas in mice and rabbits
Christian perspective, 4 minutes, start at 55:43
https://youtu.be/B-RH22BNUxc
There doesn't seem to be anything here yet