to account for the transport in nerve fibers of tubulin and neurofilament proteins in slow component a , the structural hypothesis holds that these proteins are assembled into microtubules and neurofilaments in the cell bodies and the cytoskeletal organelles then moved down in the fibers as part of an interconnected matrix at a uniform rate of about 1 mm/day .
C0041348
tubulin
C0010853
cytoskeletal