ULBP2 and non-small cell lung carcinoma: Interestingly, following the exposure of NSCLC cells to scL-RB94 in culture, we observed a time-dependent increase of ligands (ULBP2, MICA, and MICB) for NK cell activation receptors at the mRNA level compared with untreated H292 and H358 cells (Figure 4A and Figure S6).