The end of injections? Painless 'tattoo' can apply DNA vaccines through a stick-on patch

The end of injections? Painless 'tattoo' can apply DNA vaccines through a stick-on patch | Mail Online: "It could finally mean the end of painful injection, and instead deliver a powerful new type of vaccine through a stick on 'tattoo'. Researchers say patches covered in 'microneedles' may be a far safer, and less painful, way to deliver a new generation of vaccines."