In Vivo Techniques refer to methods used to study biological processes within a living organism. These techniques allow researchers to observe the effects of treatments, drugs, or genetic modifications in real-time, providing insights that cannot be achieved through laboratory studies alone. Common examples include imaging techniques like MRI and PET scans, which visualize internal structures and functions. These methods are essential in fields such as pharmacology, toxicology, and medical research. By conducting experiments in a natural biological context, scientists can better understand how various factors influence health and disease, ultimately leading to improved therapies and interventions.