表 2.

Results of histological observation in model group and PLGA/PEG group at 3 days after operation

术后 3 d 模型组及 PLGA/PEG 组组织学观察评价结果

组别 Group	纤维结缔组织增生 Fibrous connective tissue hyperplasia					炎性细胞浸润 Inflammatory cell infiltrate					肌层增厚/变薄 Muscle layer thickening/thinning					可见小血管 Visible small blood vessels
	–	+	++	+++		–	+	++	+++		–	+	++	+++		–	+	++	+++
模型组 Model group	5	0	1	0		2	3	1	0		5	1	0	0		6	0	0	0
PLGA/PEG 组 PLGA/PEG group	6	0	0	0		5	1	0	0		6	0	0	0		6	0	0	0