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Graphic taken directly from patent-related medical literature

       

Image 1:  Microneedles are developed based on the fangs of a viper

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https://news.mit.edu/2019/storing-vaccine-history-skin-1218 

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Image 2:        Microneedles being inserted and then dissolved

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https://www.scientificamerican.com/article/invisible-ink-could-reveal-whether-kids-have-been-vaccinated/

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1st view        shows the microneedles about to be applied to the skin

2nd view       shows how the microneedles are in the skin

3rd view        shows the quantum dots that are delivered through the                                             hollow microneedles (which have dissolved and therefore                                       cannot be seen any longer)

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Image 3:        Dissolvable microneedles

 

A view of how the dissolvable microneedles will penetrate the skin