Control of neuronal activity by optogenetic tools is increasingly explored in disease modelling and optogenetics and holds great promise for regenerative therapy. To investigate neuronal connectivity with other excitable cells we established an optogenetic induced pluripotent stem cell line. The SynfChrimson line harbors a stably integrated. fast. https://www.roneverhart.com/Kill-Your-Culture-Rolling-Tray-Cap-N-Kush/