'Visual purple is a photosensitive pigment found in the rod-shaped cells of this part of the eye'
the retina
THE FACTS OF LIFE: Visual purple is a photosensitive pigment found in the rod-shaped cells of this part of the eye
Visual purple is a photosensitive pigment found in the rod-shaped cells of this part of the eye
Visual purple is a photosensitive pigment found in the rod-shaped cells of this part of the eye
THE FACTS OF LIFE
the retina
THE FACTS OF LIFE