Experts are trying to create artificial blood or blood replacements. Blood replacements being studied include oxygen-carrying chemicals (such as perfluorocarbon emulsions) and cell-free hemoglobin-the portion of the red blood cell that carries oxygen. There are several advantages to blood replacements.
Blood replacement products can be stored for long periods of time. Human blood must be used within a few weeks of being donated.
Blood replacement products can be stored at room temperature. Human blood must be kept refrigerated until used.
There is no risk of a transfusion reaction caused by mismatched blood type.
Blood replacement products can be sterilized, eliminating the risk for infection.
The blood replacement products being tested still have problems. For example, blood replacement products can interfere with blood tests, are more quickly removed from the body, and are less efficient oxygen carriers.
People with neutropenia have an unusually low number of cells called neutrophils. Neutrophils are cells in your immune system that attack bacteria and other organisms when they invade your body.
Neutrophils are a type of white blood cell. Your bone marrow creates these cells. They then travel in your bloodstream and move to areas of infection. They release chemicals to kill invading microorganisms.