②P| asma cell ③ Antigen presenting·s^s 异抗原 cell: MHC 类坑原 内吞 a. dendritic cell 内吞泡 Blood dc 酶体 Langerhans ce‖ 2。内看泡与 溶酶体结合 o interstitial ce‖ veiled cell 细胞核 MHCI类抗P 早抗原结合 interdigitating cel‖ 重新表达于 细胞膜表面 b macrophage mononuclear phagocytic system②Plasma cell ③antigen presenting cell: a. dendritic cell: Blood DC Langerhans cell interstitial cell veiled cell interdigitating cell b.macrophage: mononuclear phagocytic system