DNA molecular visualisations
For information go to the following web addresses
http://www.youtube.com/watch?v=E8NHcQesYl8
http://www.youtube.com/watch?v=qy8dk5iS1f0&feature=related
http://www.youtube.com/watch?v=ZXt4pDVb2W0&feature=related
http://www.youtube.com/watch?v=cwfO6SzGaEg&feature=related