Fig. 2From: Combined effect of vitamin C and vitamin D3 on intestinal epithelial barrier by regulating Notch signaling pathwayTight-junction of colonic epithelial cells of guinea pigs under electron microscope (60,000 ×). a Control group, b LVC + VD3 group, (low-dose VC; 200 IU/(kg d) VD3 + 10 mg/(kg d)); c MVC + VD3 group (middle-dose VC; 200 IU/(kg d) VD3 + 100 mg/(kg d)); d HVC + VD3 group (high-dose VC; 200 IU/(kg d) VD3 + 200 mg/(kg d)). The white arrows indicate tight junctionsBack to article page