Multiphoton microscopy: An introduction to gastroenterologists

Figure 3 AG2 uptake in normal and cancerous tissues. A: Time course of AG2 uptake by normal tissue and cancer tissue at 100 μm depth as a function of time; B: Relative AG2 uptake by normal tissue and cancer tissue for 4000 s. The columns indicate the sum of the two-photon excited fluorescence intensities measured by photomultiplier tube at depths of 75, 100, 125 and 150 μm from the tissue surface, relative to that of normal tissue. The data are the average of three independent experiments.