A flow cytometric analysis was conducted to assess the expression of NKG2DLs, including hULBP-1, hULBP-2-5-6, hULBP-3, MICA, and MICB, in three tumor cell lines: A549 (lung adenocarcinoma), HELA (cervical cancer), and MCF-7 (breast cancer) (Figure S1). Here, MICB is linked to breast carcinoma.