In spite of the level of sophistication and development of medicine, the effective delivery of drugs remains an unsolved problem. The conventional method to deliver drugs is to inject them intravenously to the patient, or administer a pill capsule. The medicine diffuses through the bloodstream without regard to the location of the malady. For many types of diseases, the inefficiency of this method leads to increased dosage requirements, which can cause the patient to experience adverse side effects.

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