Figure 1

TumorID schematic (A) and experimental design (B). The laser controller produces the 405 nm light at 100 mW. The light travels through the laser fiber and then is directed through the objective lens by the dichroic mirror. The tumor sample is subsequently irradiated by the light from the objective lens. The emission spectrum is focused by the achromatic doublet as it travels through the spectrometer fiber to the spectrometer. The specimen was positioned beneath the objective lens at a working distance of 17 mm. Each scan was obtained using a wavelength of 405 nm at a power of 100 mW. Prior to each scan, the system was insulated with laser safe material.