127 Days
Source:
CNN Arabic
Source: CNN Arabic
127 DaysCNN Arabic
Source: CNN Arabic
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The success of blood transfusions depends on compatibility between the donor's and the patient's blood types, which is determined based on the ABO system and the Rhesus factor. There are four main blood types: A, B, AB, and O, each classified as positive or negative. The ability of these types to donate and receive varies, and type O negative blood is used in emergency situations when the blood type is unknown.
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