Stock Footage

Retina Rod Cells, Sem

Technical Information

Additional Information

Footage ID#
4844213
Model Released
Property Released
Matte attached
Alpha channel
Seamless Looping
Duration
00:00:22
Frame Rate
25 FPS
Audio
none
Number of Views
50
Date Uploaded
6 May 2011
Date Created
16 Jun 2009

Description

Retina rod cells. Coloured scanning electron micrograph (SEM) of a freeze-fractured section through a retina, revealing the structure of its photoreceptors. Photoreceptors with these rod-like outer parts (green) are named rod cells (rather than cone cells) and contain the protein rhodopsin (visual purple) that aids vision in dim light. The inner parts (orange) lead to the nuclei (blue red, top). Empty spaces in this layer show Muller cells that provide a fibrous support for photoreceptors. Light triggers signals in the photoreceptors after passing through a neuron layer (above nuclei, not seen). These signals travel to the neurons and on to the brain.

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