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Blue color-coded axonal bundles of the L1 to L4 spinal cord segment. The exiting green and red fiber bundles (white arrows) of the first and second lumbar spinal segment (L1 and L2) represent the exiting dorsal (green, arrowhead) and ventral (red, star) nerve roots. Color-coding is according to the main direction of water diffusion. Maximum angle variation 45.0°. For a better visualization of the exiting fiber bundles the image of the spinal cord was rotated.
