Painful hypodermic needles may not be needed in the future to give shots, inject drugs and get blood samples. With 4D printing, engineers have created tiny needles that mimic parasites that attach to tissues and could replace hypodermic needles, according to a new study.
from Health & Medicine News -- ScienceDaily https://www.sciencedaily.com/releases/2020/02/200204112526.htm
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