PD4抗原主要表达于靶细胞的膜上，不耐热，为分子量40kD的蛋白性抗原。
The PD4 antigen was expressed on the membrane of target cells and it was a heat-sensitive protein of40KD molecular weight.
PD4抗原主要表达于靶细胞的膜上，不耐热，为分子量40kD的蛋白性抗原。
The PD4 antigen was expressed on the membrane of target cells and it was a heat-sensitive protein of40KD molecular weight.
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