BioBrick assembly standards and techniques and associated software tools.

The BioBrick idea was developed to introduce the engineering principles of abstraction and standardization into synthetic biology. BioBricks are DNA sequences that serve a defined biological function and can be readily assembled with any other BioBrick parts to create new BioBricks with novel properties. In order to achieve this, several assembly standards can be used.

Umbilical vein grafts and PTFE grafts for femoro-popliteal bypass. Preliminary results.

This retrospective, multiple-center study includes 172 PTFE (Gore-Tex) and 35 umbilical vein grafts (Bio-graft) used for femoro-popliteal bypass grafting. The one-year patency rate was approximately 63% in both groups. Until further experience is accumulated, autogenous saphenous vein should probably be the first choice for femoro-popliteal bypass grafting.