1. What is Hematology ?.  Hematology, also spelled haematology, is the branch of medicine concerned with the study of the cause, prognosis, treatment, and prevention of diseases related to blood.^[1] It involves treating diseases that affect the production of blood and its components, such as blood cells, hemoglobin, blood proteins, bone marrow, platelets, blood vessels, spleen, and the mechanism of coagulation. Such diseases might include hemophilia, blood clots, other bleeding disorders and blood cancers such as leukemia, multiple myeloma, and lymphoma.  

2. What is Aplastic Anemia ?. 

Aplastic Anaemia develops as a result of bone marrow damage. The damage may be present at birth or occur after exposure to radiation, chemotherapy, toxic chemicals, some drugs or infection. Symptoms may develop slowly or suddenly. Fatigue, frequent infections, rapid heart rate and bleeding may occur. f necessary, treatment can include medication, blood transfusions and stem-cell transplants.

3. What is Bleeding Disorders ?. A bleeding disorder is a condition that affects the way your bloodnormally clots. The clotting process, also known as coagulation, changes blood from a liquid to a solid. When you're injured, yourblood normally begins to clot to prevent a massive loss of blood.

4. What is Anemia ?. Anemia is a condition that develops when your blood lacks enough healthy red blood cells or hemoglobin. Hemoglobin is a main part of red blood cells and binds oxygen. If you have too few or abnormal red blood cells, or your hemoglobin is abnormal or low, the cells in your body will not get enough oxygen. 

4. What is White Blood Cells?. White blood cells are an important component of your blood system, which is also made up of red blood cells, platelets, and plasma. ... White blood cells, also called leukocytes, are essential for good health and protection against illness and disease. Think of white blood cells as your immunitycells.