The Endomyocardial Biopsy (EMB) market involves medical procedures and devices used to extract small samples of heart muscle tissue for diagnostic analysis. Endomyocardial biopsy is primarily used to diagnose and monitor heart conditions such as myocarditis, heart transplant rejection, cardiomyopathy, and other cardiac disorders. The procedure is minimally invasive, typically performed via catheterization, and plays a critical role in detecting cellular abnormalities, inflammation, or other signs of disease that may not be visible through imaging tests.