Punk not dead trisela cetirizine dihydrochloride obat apa "If we can transplant 20,000 cones in [a person with] macular degeneration, I think there's potential for tremendous clinical benefit because humans don't need very many functioning cones for a really useful function," said Ali. "The foveola, in the centre of the fovea [in the retina], which is responsible for really high visual acuity â things like reading â has only 20,000 cones. That gives you an idea just how few cells you might need."
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