D Deb_in_VA DIS Veteran Joined Aug 21, 2007 Messages 2,006 Mar 15, 2008 #1 Which of these is a double helix? DNA confirmed
T Tantor <font color=999999>Ventured over to the dark side< Joined Oct 3, 2001 Messages 7,080 Mar 15, 2008 #2 thanks Deb