Gastric myofibroblast express CD90, α-smooth muscle actin, and class II MHC.

<p>Gastric myofibroblast express <b>A</b>) CD90 by flow cytometry compared to the solid peak isotype control. These cells also express <b>B</b>) α-smooth actin and class II MHC, where class II MHC is upregulated by exposure to <i>H. pylori</i> as shown by confocal microscopy. Class II MHC is also upregulated by <b>C</b>) incubation with CD4⁺ T cells and <b>D</b>) <i>H. pylori</i> exposure by flow cytometry. Figures are representative of 3 experiments in duplicate.