A team of biologists at University of Alberta, Canada, has discovered that zebrafish’s stem cells can selectively regenerate damaged photoreceptor cells. Zebrafish. The inset shows zebrafish cone photoreceptor mosaic: it consists of a precise reiterated arrangement of cone spectral sensitivity subtypes, extending in rows radiating toward the periphery of the retina, the micrograph demonstrates the positions of the UV- and blue-sensitive cones,...
