T lymphocyte transformation test and LPCA were carried out in both training group and contrast group, at the same time lavage with E. coli.

• 测定训练组和对照组T细胞转化试验和白细胞促凝血活性(LPCA),用大肠杆菌、志贺福氏杆菌灌胃,用肺炎链球菌涂抹口、鼻、咽部。