Bioengineered vein successfully implanted in U.S. first

The video tutorial explains the process of creating human cell-based vein implants. It begins with a biodegradable mesh scaffolding, to which donor cells are added. Over time, the mesh dissolves, and the vein is cultured in nutrients for two months. The cultured vein is then washed to remove living cells, leaving a collagen structure. These nonliving veins can be stored and implanted without causing an immune response.

What is the basis of the bioengineered vein mentioned in the text?

What happens to the mesh scaffolding after the vein is cultured?

How long is the vein cultured in nutrients?

What is left behind after washing the living cells from the vein?

Why can nonliving veins be stored and implanted freely?