Hematology is the branch of medical science that focuses on the study, diagnosis, treatment, and prevention of diseases related to blood, blood-forming organs, and blood disorders. This field encompasses the study of blood cells, blood clotting mechanisms, bone marrow, and various blood-related disorders such as anemia, leukemia, and hemophilia. Hematologists also diagnose and treat disorders of the lymphatic system, which includes the lymph nodes, spleen, and thymus. Research in hematology aims to better understand the causes and mechanisms of blood-related diseases in order to develop more effective treatments and therapies for patients.