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The zebrafish is a valuable animal model in pre-clinical cancer research. Optical coherence tomography (OCT) is a non-invasive optical imaging technique, which provides a label-free and three-dimensional method to investigate the tissue structure. Jones-matrix OCT (JM-OCT) is a functional extension of conventional OCT, to gain additional tissue specific contrast by analyzing the polarization states of the back-scattered light. In this work we present the longitudinal investigation of in vivo wildtype and a tumor xenograft zebrafish model using our JM-OCT prototype. The scattering and depth-resolved polarization properties in control versus tumor regions were analyzed and compared to results obtained from histology.
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