CiRC Biosciences

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The foveola is a sliver of tissue at the very center of the retina, and the researchers say it accounts for roughly half of human visual perception. It also has an odd composition: it holds red and green cones but no blue ones. Johns Hopkins scientists grew that region in a dish and watched it assemble itself, then described a mechanism that contradicts an explanation the field has used for about 30 years.

Updated Oct 31