BTN3A3 and ovarian carcinoma: In order to understand the expression level of BTN3A3 in different ovarian cancer cells, Western blot (Figure 1C) were used to detect the protein level of BTN3A3 in six ovarian cancer cell lines (ES-2, 3AO, HO-8910, HO-8910PM, NIH : OVCAR-3 and SK-OV-3).