Gastrointestinal;
Unit,;
Department;
of;
Medicine,;
Massachusetts;
General;
Hospital,;
Harvard;
Medical;
School,;
Boston,;
MA;
02114,;
United;
States;
Center;
for;
the;
Study;
of;
Inflammatory;
Bowel;
Disease,;
Massachusetts;
General;
Hospital,;
Harvard;
Medical;
School,;
Boston,;
MA;
02114,;
United;
States;
几丁质酶活力; 上皮细胞; 致癌性; 炎症; 潜在作用; 乙酰氨基葡萄糖; 哺乳动物; 蛋白激酶B;