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In order to investigate the effects of conservation in liquid nitrogen and formalin on peripheral vascular tissue (abdominal aortic, femoral and flank artery tissue) laser-induced fluorescence spectra were recorded during the exposure of these tissues to He-Cd radiation (442 nm). The spectral distribution of tissue fluorescence allowed the development of simple algorithms based on the intensity difference in order to discriminate the tissue samples when they were fresh and after they were stored for 24 and 48 hours in liquid nitrogen or formalin.

proceedings of spie, the international society for optical engineering/proceedings of spie

&lt;title&gt;Effect of liquid nitrogen and formalin-based conservation in the in-vitro measurement of laser-induced fluorescence of peripheral vascular tissue&lt;/title&gt;