ECG ruler. Previously: Cerebrospinal fluid washing in and out of the brain - GIF Inflating human lungs - GIF Heart patient coughs up intact cast of bronchial tree - photo Blood flow visualized - GIF Kidney stone under electron microscope - photo
New plans added on 11/20: Click here for 2,589 plans for homemade tools.
neilbourjaily (Mar 6, 2023)
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