Purchase Qty. Reference FOB Price
5,000-9,999 Pieces US$1.98
10,000+ Pieces US$1.88
Product Description
The unique plastic for allows you to assemble the model and then twist is into a double helix,instead od building it around a center post as in other models.Each of the four nitrogenous bases comes in a different unlabled color,so students can design their own base pair ciding.The model is removable ...