This is a molecular model of an RNA helix. RNAs are transcribed from DNA in the cell and are important to many cellular processes.This will require support material to print properly. It's also available on Shapeways to print (at cost, no markup) if you do not have the ability to print this at home.If people are interested I can try to make another version that has small bars in between the base-pairs to allow it to be printed without dissolvable support. (but I don't own a 3D printer so I'd need a volunteer to test it out).