An intensity-based sensor for the presence prostate cancer cell lineLNCaP was demonstrated in live mice bearing a flank xenograft.171 M13 bacteriophage were engineered to displayan antibody against prostate-specific membrane antigen (PSMA) anda protein (p8) that binds well to SWCNTs, a multifunctional scaffolddesigned in previous studies.172,173 Those sensor constructsor controls were injected intravenously into mice bearing flank LNCaPtumors expressing PSMA. This evidence concerns the gene FOLH1 and prostate carcinoma.