Notably, protein degradation inhibitors failed to rescue the expression of MICA, MICB, and ULBP3 (Figure 3C), indicating that the reduced protein levels of MICA, MICB, and ULBP3 in the infected tumor cells were due to the impaired translation of these ligands, and not due to increased protein degradation. This evidence concerns the gene ULBP3 and neoplasm.