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According to usual technique, vaccines are introduced into the body by means of a needle. A search for alternative methods has been ongoing for a few years already for a number of reasons. Scientists of the Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) and of the Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany, recently showed that nano-technological formulations can indeed be used to administer vaccines via the skin. This might improve existing vaccination methods considerably. The results of the researchers are published in the scientific journal, "Nanomedicine".