Researchers from Tomsk Polytechnic University and Queen Mary’s University of London have developed smart capsules that deliver water-soluble compounds to a certain part of the body. Two-micron capsules have watertight shells containing nanoscale magnets, delivering a drug to a targeted part of the body. Once delivered to the site, the capsules gradually dissolve, releasing the drug. According to the researchers, such measures will assist in the delivery of drugs that consist of proteins and other water-soluble substances used to treat a wide range of diseases including cancer and infectious diseases. The study results were published in Colloids and Surfaces B: Biointerfaces.