MICA and neoplasm: Flow cytometric assessment of the tumor surface antigens MICA/B, and UL-16 binding proteins (ULBP) 2–6 on shN and shC cells revealed that shN typically have higher surface MICA/B levels (Figure 5A, Figures S5A–C), but lower levels of all ULBPs tested compared to shC cells (Figure 5A).