A person with type O blood can donate to a patient with type A because the donor's blood
Answer Details
A person with type O blood can donate to a patient with type A because the donor's blood lacks antigens. Blood type is determined by the presence or absence of certain antigens on the surface of red blood cells. Type O blood does not have A or B antigens, whereas type A blood has A antigens. Therefore, type O blood can be safely transfused to someone with type A blood, as the donor's blood will not trigger an immune response in the recipient due to the lack of antigens.