(((Those depolymerizing microtubules are hard to beat, but I have to say that the floating cholesterol rafts are a personal favorite.)))
http://www.studiodaily.com/main/searchlist/6850.html
Link: Cellular Visions: The Inner Life of a Cell | Studio Daily.
http://multimedia.mcb.harvard.edu/media.html
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(((Thanks, Allen Varney!)))