| http://www.w3.org/ns/prov#value | - Among these additives or charged lipids which can be used, there may be mentioned, in particular: --sterols and their derivatives, for example oxyethylenated derivatives, more especially cholesterol, cholesterol acid sulfate and its alkali metal salts and cholesterol acid phosphate and its alkali metal salts; --long-chain alcohols and diols; --long-chain amines and their quaternary ammonium deriva
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