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BLI of mice with xenograft tumors. (A) BLI (n = 4) on day 5 post injection of 104 or 105 luciferase-expressing HeLa cells to the left and right dorsolateral thoracolumbar regions of NU/J mice. Substrates were administered via either i.v. or i.p. administration. (B) Quantitative analysis of bioluminescence intensity of sites inoculated with 105 cells. Data are presented as mean and s.d. of four biological replicates. *P < 0.05 for two-tailed t-test.
