<unk>  or hemopathology (both also spelled haem-, see spelling differences) is the study of diseases and disorders affecting and found in blood cells, their production, and any organs and tissues involved in hematopoiesis, such as bone marrow, the spleen, and the thymus. Diagnoses and treatment of diseases such as leukemia and lymphoma often deal with<unk> ; techniques and technologies include flow cytometry studies and immunohistochemistry. In the United States,<unk>  is a board-certified subspecialty by the American Board of Pathology. Board-eligible or board-certified<unk> sts are usually pathology residents (anatomic, clinical, or combined) who have completed<unk>  fellowship training after their pathology residency. The<unk>  fellowship lasts either one or two years. A physician who practices<unk>  is called a<unk> st.
Hematopathology
Cytopathology
Histopathology
Pathology
Tissue typing
Mycology
Histology
Surgical pathology