FIELD: medicine.
SUBSTANCE: invention refers to medicine and concerns nanoparticles containing vinyl methyl ether and maleic anhydride (PVM/MA) copolymer, or its derivatives.
EFFECT: present invention provides better bioadhesion, and as a consequence prolonged retention time in close contact with mucous membranes.
26 cl, 7 ex, 13 dwg, 10 tbl
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