A structure is a 3D shape made from different materials and parts. Some can be simple to build, such as a wall. Others can be complex, or harder to build, such as a bridge or a building.
"The remarkable thing is that the bacteria also arrange themselves along complex ... be used in the design of so-called smart ...
The siRNA associates with cellular proteins to form the RNA-induced silencing complex ... updated its design tool to display the secondary structure of the siRNA/mRNA target site.