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- 12:15, 3 March 2012 Z8600021 talk contribs uploaded File:Gap junction 01.jpg (==Gap Junctions== * Discovered by J.P. Revel & M.J. Karnovsky in 1967 * allowing direct communication between cells (open & close) * close membranes 2 - 3 nm apart * connexins form hollow 1.5 nm diameter cylinders * heart muscle, smooth muscle electrical)
