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Contact: Tom Abate
Stanford University Medical Center

On and Off Switches for Cells

Caption: In the excitatory opsin (left), the red depicts a channel of negatively charged amino acids that draws positive sodium ions into the neuron to turn it on. The new bioengineered inhibitory opsin (right) is more blue to denote its channel of positively charged amino acids that draws in negative chloride ions to turn the neuron off.

Credit: Deisseroth lab

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Related news release: Stanford team makes switching off cells with light as easy as switching them on

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