In vivo autofluorescence investigations on animal tumors

The in vivo fluorescence behavior of unmarked tissue (autofluorescence) of tumor-bearing mice was investigated. An argon-ion laser was used as the excitation source emitting radiation at 351 nm and 364 nn. Fluorescence bands in the red spectral range were recorded. The spectral distribution of the fluorescence of the solid Ehrlich carcinoma was different from that of the neighboring tissue.