In the cellular uptake analysis, the addition of BCH significantly inhibited uptake by C6 glioma (12.2 ± 0.8%), U-87MG (27.6 ± 1.1%), and GL261 cells (12.6 ± 2.0%), suggesting that 211At-PA uptake is predominantly mediated by system L amino acid transporters (Figure 2). The gene discussed is SLC38A7; the disease is central nervous system cancer.