Word: celloidin
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...that the blood, entering, pushes the solution ahead of it into the vein at the receiving end. 2) How is the blood to be cleansed without any halt in its passage through the tube? By the substance of the tube itself, which is made of a porous material called celloidin. This is permeable to certain solids, among them mineral poisons, which it absorbs as the blood flows through ("Dializing out" is the stock laboratory idiom for this method of removing impurities). 3) How can substances necessary to the blood be prevented from escaping through the porous tube? They cannot...
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