AR and hydrops fetalis: For TCC-SUP cells with AR knockdown (shAR) (Fig. 2A) treated with an antiandrogen (Enz, HF, or ASC-J9) (Fig. 2B), the NK cell killing efficacy against these BCa cells was enhanced, while for T24 cells, AR overexpression (oeAR) (Fig. 2C) and DHT treatment (Fig. 2D) could reduce the killing efficacy.