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This is a fabrication technology of fine invisible needles with a length of several hundred micrometers (named micorneedles),which made from water-soluble polymers such as Hyaluronan. Drug-containing microneedle array can be inserted into the skin,dissolved by water,after then the drug is released in the skin,which results in the transdermal delivery similar to the injection. Now we have succeeded in producing and marketing the microneedle cosmetics. We are also developing pharmaceutical microneedles, the most advanced project is influenza vaccine microneedle which is in Clinical Study stage.
Fumio Kamiyama, Ying-Shu Quan
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