To confirm the detectability of AR-V7 and AR mRNA with the AdnaDetect assay in VTX-1-isolated cells, different cell mixtures of 22Rv1 prostate cancer cells and purified WBCs were prepared to mimic a typical VTX-1 output and analyzed for AR-V7 and AR gene expression: 0 to 68 22Rv1 cells were mixed with 0, 1,000, or 3,000 WBCs (Fig. 2, ❷). Here, AR is linked to prostate cancer.