Pulsed and cw laser fluorescence spectra from cancerous, normal, and chemically treated normal human breast and lung tissues.

The origin of the differences in the fluorescence spectra obtained from cancerous and normal human breast and lung tissues is explored experimentally. The fluorescence spectra from chemically treated normal tissues were measured to give information on the source of the spectral differences. The pulsed fluorescence spectra photoexcited by the second and third harmonic of a 10-ps pulse from Nd:glass laser are reported for normal and cancerous tissues of breast and lung.