Illustration of rod (red) and cone (blue) photoreceptor cells in the human retina. Rods are sensitive to monochromatic low light levels, while cones detect colour | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Harris, Roger |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |