سؤال قراءة ستيب محلول — أسئلة النفي والاستثناء (تدريب 4502)

(1) A blood type also called a blood group) is a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells RBCs). You can receive blood from a donor with the same blood type as you. You can also receive blood from a donor with a compatible blood type. There are different systems to classify blood types. In ABO system, we have four main types: • Type A blood has the Group A antigens and makes antibodies to fight Group B blood • Type B blood has the Group B antigens and makes antibodies to fight Group A blood. • Type AB blood has both Groups A and B antigens, but doesn't make antibodies for either one. • Type O blood doesn't have either type of antigen. (2) So, who can receive and who can donate in ABO system? • Type A only receives from A and O. Blood type B receives only B and O. AB blood type receives all types, and only can donate to people with type AB blood. Type O blood receives only from O. Blood type O negative is given to all blood types