“…However, it has been shown that some membrane lipids perform one or another specific function in the transfer of electrons, the movement of ions and in the processes of swelling and contraction. For example, phosphatidic acid [9] and (or) cardiolipin, as well as phosphatidylinosite, are involved in the mechanism of mitochondrial contraction, as already shown in Chapter IX. Lecithin, apparently, performs a specific function, participating in the action of cytochrome oxidase and dehydrogenase of p-hydroxybutyric acid, as shown by the work of Green's laboratory.…”