A group of scientists from the Moscow Aviation Institute is developing special polymers that can precisely deliver drugs to cells and tissues in the human body. This was reported by the press service of the higher educational institution. The polymer is able to absorb various substances, and then release them at the right time. This property underlies the idea of controlled drug delivery to cells. Since coordination polymers contain magnetically active ions or metal clusters, the control can occur by means of a magnetic field. The drug system can be created in such a way as to respond to a specific group of cells according to the "key-lock" principle. When the cell meets the specified parameters, the drug is released, the message says, quoting one of the members of the research group Maria Sharapova, a first-year MAI master's student. Now scientists continue to search for the optimal production method for the transportation of drugs in polymers. “The polymer must have biocompatibility, high adsorption rate, the ability to contain as much of the delivered substance as possible, be non-toxic and resistant to degradation for a certain time. At the same time, it must move freely through the vessels, without clogging them, and be completely excreted from the body,”the message says. In the future, the results of their work can be used in the treatment of oncological diseases, biosensors for the detection of various types of viruses.