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Panel of in vivo confocal fluorescence images from the same field of view (FOV) of an EMT6 tumor acquired at different time points after i.v. administration of 10 mg/kg NPe6. The FOV in all the images is 600 µm x 600 µ m, and the optical section thickness is 6 µm. NPe6 fluorescence is in green, and CD31-positive vessels labeled by Alexa Fluor 647-conjugated antibody are in red.
