Another article on Golgi apparatus showing that the centrosome isn't always in charge under guidance from the nucleus.:-"In neurons, microtubules are essential for generating the axonal and dendritic extensions that carry electrical impulses. In most cells, these cylindrical polymers of tubulin grow from centrosomes, but in neurons, centrosomes lose function as the cells develop, suggesting another point of origin for this essential structural protein."-http://www.the-scientist.com/?articles.view/articleNo/34771/title/Branching-Out/