TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The linker prior to crosslinking the first active substance comprises: a dialdehyde, paraformaldehyde, epoxide, a dione, a diester or a diisocyanate; and 1,3-phenyldiisocyanate, 1,4-phenyldiisocyanate, 1,4-cyclohexyldiisocyanate, toluene diisocyanate or 1,6-hexane-diisocyanate.    TECHNOLOGY FOCUS - PHARMACEUTICALS - Preferred Components: The second active substance comprises: a protein, nucleic acid, antibacterial, antiviral, cardiovascular therapeutic, anti-cancer therapeutic, CNS therapeutic, hypoglycemic agent, fertility/contraception or woman's health agent, infectious disease therapeutic, pulmonary disease therapeutic or neutralizing agent; a microbial cell, herbicide, an insecticide, a fungicide, a repellent for an animal or insect, a plant growth regulator, a fertilizer, a flavor or odor composition, a catalyst, a photoactive agent, an indicator, a dye and/or an UV adsorbent; a biomolecule comprising a peptide, protein, enzyme, antibody, nucleic acid, aptamer or ribozyme; a wetting agent comprising oleyl alcohol or cetyl alcohol; and an ionic species which can form an ionic liquid with a third active species that is complementary charged substance. The third active substance comprises a protein, nucleic acid, antibacterial, antiviral, cardiovascular therapeutic, anti-cancer therapeutic, CNS therapeutic, hypoglycemic agent, fertility/contraception or woman's health agent, infectious disease therapeutic, pulmonary disease therapeutic or neutralizing agent.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The composite further comprises a second active substance which is bonded to the first active substance with the linker. Preferred Components: The regenerated cellulose has substantially the same molecular weight as starting cellulose from which the regenerated cellulose is prepared. The weight ratio of regenerated cellulose to first active substance is 1000:1-1:2. The weight ratio of regenerated cellulose to second active substance is 1000:1-1:2. The linker is 1-20 atoms in length, and comprises: alkyl, alkenyl, alkynyl (all optionally substituted), ether, ester, polyether, polyester, polyalkylene, polyamines, heteroatom substituted alkyl, alkenyl or alkynyl, cycloalkyl, cycloalkenyl, heterocycloalkyl, or heterocycloalkenyl group; and a 1-6C alkyl, a 1-6C alkoxy or a 2-6C alkyl (where at least one of the carbon atoms is substituted with oxygen or an amino group). ACTIVITY - Respiratory-Gen; Antimicrobial; Contraceptive; Antiinfertility; Antidiabetic; CNS-Gen; Cytostatic; Cardiovascular-Gen.    MECHANISM OF ACTION - None given.    ADMINISTRATION - Administration of formulation is by topical (ophthalmic, vaginal, rectal or intranasal), oral, inhalation or parenteral (intravenous drip, subcutaneous, intraperitoneal or intramuscular injection) routes. No dosage details given.    EXAMPLE - No suitable example given.