Biotherapy, also known as biological therapy or biologic therapy, refers to the use of living organisms or substances derived from living organisms to treat diseases. It involves the use of biological agents, such as monoclonal antibodies, cytokines, vaccines, gene therapies, and cell-based therapies, to target specific disease mechanisms or enhance the body's immune response against diseases.
Radiopharmaceuticals are specialized pharmaceutical formulations that contain a radioactive substance, known as a radionuclide. These substances are used for diagnostic or therapeutic purposes in nuclear medicine. Radiopharmaceuticals are designed to selectively accumulate in specific organs or tissues in the body, allowing the emission of radiation to be detected and visualized by imaging techniques, such as positron emission tomography (PET).