An interesting parallel: Rod outer-segment disk membranes are highly packed with a membrane protein (rhodopsin) 👁️, similar to the stacked domains of thylakoids (PSII-LHCII) 🌱. And isolation of disk membranes may cause rhodopsin to crystallize into 2D arrays 💠 www.nature.com/articles/421... 🧪 🧶🧬🌾🔬

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