| 11. | Cattle have two kinds of color receptors in the cone cells of their retinas.
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| 12. | The human retina contains about 120 million rod cells and 6 million cone cells.
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| 13. | Some areas have higher densities of cone cells, for example ( see fovea ).
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| 14. | Their eyes contain very few cone cells, likely due to the murky water they inhabit.
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| 15. | A similar enzyme exists in the cone cells responsible for color vision in the retina.
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| 16. | Terns have red oil droplets in the cone cells of the retinas of their eyes.
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| 17. | The double-opponent cells are receptive to opposite inputs from different cone cells in the retina.
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| 18. | Color resolution is not so good-4.5 million cone cells.
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| 19. | Generalized PRA can be divided into either dysplastic disease, where the rod or cone cells.
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| 20. | As cone cell says-the number of cones drops off around the periphery of the retina.
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