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. Author manuscript; available in PMC: 2011 Jan 1.
Published in final edited form as: Spine J. 2009 Nov 18;10(1):32. doi: 10.1016/j.spinee.2009.10.006

Figure 3.

Figure 3

In vivo bioluminescence imaging of Ad-Luc injected into vertebral disc at different time points. A: Image of the same animal over the different time points. The signal still could be detected after 5 weeks. B: The trend of the average fluorescence signal strength curve demonstrated that the signal decreased over time. The signal strength initially decreased to nearly 50% within 7 days. But the deamplification subsequently slowed down, and even after 35 days, the signals strength remained approximately 10% of the initial value.