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What did Theodor Schwann have to do with cells? Theador Schwann is the physiologist that discovered cells now called schwann cells. These are the cells that produce myelin sheets that wrap around the axons of of neurones. Tâ¦his creates the myelin sheeth which speeds up the conduction of action potentials. These cells exist only in the periphery but there are similar cells in the CNS.
Although there was some minor advancement in cellular theory between Hooke's discoveries and the presentation of Schwann's and Schleiden's theory, it was Theodor Schwann that first introduced the idea that living things are composed of cells.