| http://www.w3.org/ns/prov#value | - oalkyl, phenyl possibly substituted (with a halogen atom or a hydroxy, alkyl, alkoxy or carboxy radical), naphthyl or cyano, R2 represents a hydrogen atom or an alkyl radical and n is a whole number from 1 to 6, wherein the alkyl portions and radicals are a straight chain or branched and contain 1 to 4 carbon atoms, and a second coating from a solution of the antibacterial substance, said second c
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