In vivo research involves conducting experiments or studies on living organisms, such as animals or humans, to understand biological processes, test hypotheses, and develop potential treatments for diseases. This type of research allows scientists to observe how biological systems function in their natural environment and can provide valuable insights into the effects of drugs, therapies, and interventions on whole organisms. In vivo studies are often used to validate findings from in vitro studies (conducted in a controlled laboratory setting) and help bridge the gap between basic research and clinical applications.