Rated "high" as important concept of e.g. microtubule dynamics. The article is a pitifully short stub. - tameeria 00:59, 19 February 2007 (UTC)
Fleshed out, it is a rather important concept, although I would think that this topic is somewhat advanced, it is usually taught at a 3rd year biology level. - Chronic since 1992. (talk) 20:45, 22 January 2008 (UTC)