11. Rod cells are most sensitive to light of wavelengths near 498 nm; such light appears blue-green.12. Rattlesnake eyes, which contain a large number of rod cells , are well adapted to nocturnal use. 13. RETGC-1 has been found to be expressed in higher levels in cones compared to rod cells . 14. As green iguanas have only a few rod cells , they have poor vision in low-light conditions. 15. Albinism specifically affects the rod cells , but the number and distribution of the cones is unaffected. 16. In rod cells , these together are called rhodopsin. 17. As Ricord's iguanas have only a few Rod cells they have poor vision in low-light conditions. 18. PDE in rod cells are activated by transducin. 19. The retina contains rod cells and cone cells. 20. Because light is so scarce, fish often have larger than normal, tubular eyes with only rod cells .
