. 2021 Aug 5;6(3):e26047. doi: 10.2196/26047
©Daniel S Akerib, Andrew Ames, Martin Breidenbach, Michael Bressack, Pieter A Breur, Eric Charles, David M Gaba, Ryan Herbst, Christina M Ignarra, Steffen Luitz, Eric H Miller, Brian Mong, Tom A Shutt, Matthias Wittgen. Originally published in JMIR Biomedical Engineering (http://biomsedeng.jmir.org), 05.08.2021.
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Figure 4.
Pneumatic valves. The compressed air input is in the upper left.