Photoreceptor sensory cilia (right, top part
of rod cell) are the light sensitive parts of the rods and cones
in the eye's retina (middle and left).
Image Credit: Qin Liu, MD, PhD and Eric A. Pierce, MD, PhD,
University of Pennsylvania School of Medicine; National Eye Institute,
National Institutes of Health
version (2.08 MB, JPEG, 300 DPI)