Molecular cardiology, a recent cardiovascular discipline, employs molecular biology techniques for analyzing, diagnosing, and treating heart conditions. It focuses on novel pathways affecting cardiac issues, aiming to translate discoveries into bedside strategies. Cellular cardiology studies heart function at the cellular level. Researchers note distinct heart cell groups, revealing diverse origins and treatment responses. Commonly used molecular and cellular methods include Polymerase Chain Reaction, Electrophoresis, Restriction Digestion, Blotting, and Cloning.