It provides identity to the cell. eg. antigens on red blood cell in relation to blood group.
它可为细胞提供身分，例如红血球表面的抗原使血液有血型。
Because the substitutes do not have cell membranes with blood-group antigens cross matching and typing are not required before use.
因为替代品没有含有血型抗体的细胞膜，使用之前不需要交叉配血实验。
Because the substitutes do not have cell membranes with blood-group antigens cross matching and typing are not required before use.
因为替代品没有含有血型抗体的细胞膜，使用之前不需要交叉配血实验。
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