Amino acid deletions at positions 893 and 894 of cytotoxin-associated gene A protein affect Helicobacter pylori gastric epithelial cell interactions

Figure 2 Detection of each plasmid transfection efficiency and expression of each cytotoxin-associated gene A in AGS cells. A: Images under an ordinary light microscope and fluorescence photos after each cytotoxin-associated gene A (cagA) transfection into AGS (100 ×). Scale bar = 100 μm; B: The mRNA expression levels in AGS cells; C: The protein levels in AGS cells. CagA proteins were quantified using by Western blot analysis.