‘tween two stories


Like a protein channel,
regulating the permeability
of the membrane.


4 thoughts on “‘tween two stories

  1. The membrane of each cells contains millions of channels made from protein, that allow required substances to enter.
    Standing next to the elevator, being able to see both stories, I saw the floor I was standing on as the membrane and the elevator as the channel allowing things to pass through the membrane. Biology everywhere…

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