Similar to the above studies, we found that three of MHC class I molecules (H2-K, H2-D1, and H2-D) and tapasin, an ER chaperone that controls MHC class I assembly with peptides (Grandea and Van Kaer, 2001), were significantly up-regulated only in the Hep-dG infection group. Here, TAPBP is linked to infection.