User:Arsham yare/sandbox

Is the O+ blood type the universal donor or not?
 Answer: No, the blood type that is referred to as the"Universal Donor" is O negative, not O positive. Antigens are proteins (or glycoproteins) on the surface of red blood cells that can react with the recipient's immune system in such a way that the recipient would be harmed. The "O" indicates that there are no antigens in the ABO system that would cause an immediate reaction to antibodies in the recipient. The "positive," on the other hand, indicates the cells have an antigen known as "Rh factor" (the cells are "positive" for this factor). If the recipient has already developed antibodies to Rh (been "sensitized" to Rh), the introduction of Rh positive cells can be rapidly fatal. On the other hand, if the recipient has NOT developed these antibodies, the Rh positive blood can induce the recipient to produce these antibodies. This can have serious consequences if the recipient is a woman of childbearing age who attempts to carry an Rh positive pregnancy, or if an individual of either gender mistakenly receives a transfusion of Rh positive cells in the future. Therefore, an Rh negative individual will not be given Rh positive blood, and O positive is not the universal donor. Universal donor refers to blood that lacks ABO antigens, as well as any Rh antigens (O negative). Due to the rapidity with which blood can be tested, typed and crossmatched, almost all blood given today is "group and type specific," meaning that what you have is what you get (for example, a B positive person gets B positive blood).

Prepared by: ARSHAM HAILE Email: Arsham1@hotmail Tell no: 0965395921