An investigation of fluorescent diagnosis possibility in the near infrared range was performed on a rat model of the Pliss lymphosarcoma (30 rats) with the use of indocyanine green (ICG) as a fluorescent marker and photosensitizer. For conju- gates of ICG there were used bovine and human albumins as these proteins in solution strengthened and stabilized fluorescence and in intravenous administration promoted improving diagnosis while the diagnostic contrast after administration during the optimum time was no less than 6. It permitted to easily detect a pathological focus (tumor or inflammation).
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