<unk>  is the process of transferring blood or blood-based products from one person into the circulatory system of another.<unk> s can be life-saving in some situations, such as massive blood loss due to trauma, or can be used to replace blood lost during surgery.<unk> s may also be used to treat a severe anaemia or thrombocytopenia caused by a blood disease. People suffering from hemophilia or sickle-cell disease may require frequent<unk> s.
Blood transfusion
Blood donation
Cadaveric blood
Transfusion medicine
Intravenous sugar solution
Blood substitutes
Transfusion therapy
Dextrose monohydrate injection 