肺泡囊

结果老年组大鼠肺泡囊扩张、肺泡腔轻度扩大。

[ Results ] Both the alveolar sacs and alveolar spaces were enlarged in the senile group .

肺泡形成丛集的肺泡囊，经由肺泡管连接至支气管。

Alveoli form clusters ( alveolar sacs ) connected by alveolar ducts to the Bronchioles .

缺氧对支气管、肺泡管和肺泡囊上皮细胞NOS的活性无明显影响。

However , the NOS activities in epithelial cells of bronchi , alveolar duct and sac , in hypoxic rats were not affected .

结果：糖尿病4周大鼠肺支气管上皮细胞、肺泡管上皮细胞、肺泡囊上皮细胞和动脉内皮细胞iNOS呈阳性或弱阳性，静脉内皮细胞、毛细血管内皮细胞iNOS呈阴性。

RESULTS : In diabetic rats , the iNOS positive or weak positive staining was localized in epithelial cells of bronchi , epithelial cells of alveolar ducts , alveolar sacs , and arteries , but negative in endothelial cells of vein and capillary .