Figure 1.

(a) Mean fluorescence spectra obtained from human pancreatic normal (blue solid line), pancreatitis (green dot-dash line), and adenocarcinoma (red dashed line) tissues. The gray vertical dashed lines indicate the wavelengths at which F_ratio(=F₄₀₀∕F₆₀₀) was calculated for each spectrum. (b) Mean reflectance spectra obtained from normal (blue solid line), pancreatitis (green dot-dash line), and adenocarcinoma (red dashed line) tissues. The gray dashed lines indicate the wavelengths at which R_ratio(=R₄₇₀∕R₆₅₀) was calculated for each spectrum. N denotes the number of individual spectra. The standard error is shown at select wavelengths. (Color online only.)