題目發炎反應(inflammatory response)中,下列何種白血球可進入受感染區域並活化成巨噬細胞 (macrophages)?A.淋巴球(lymphocyte)B.單核球(monocyte)C.嗜中性球(neutrophil)D.嗜鹼性球(basophil)官方答案B