How scientists have transplanted a lab-grown lung into a pig

The video explains the process of bioengineering pig lungs. It starts by taking a lung from a pig and bathing it in a sugar and protein solution to remove blood and cells, leaving a lung skeleton. This scaffold is then treated with growth factors, hydrogels, and nanoparticles to prepare it for receiving cells from the pig intended for transplantation. The researchers observed that pigs with bioengineered lungs developed blood vessel networks within two weeks.

What is the first step in preparing a lung for bioengineering?

• Removing the lung from a human

• Covering it with hydrogels

• Bathing it in a solution of sugar and protein

• Injecting it with nanoparticles

What is the purpose of treating lung scaffolds with hydrogels and nanoparticles?

• To change their color

• To prepare them for receiving cells

• To make them lighter

• To increase their size

What is the role of growth factors in the treatment of lung scaffolds?

• To change the lung's shape

• To remove impurities

• To enhance cell reception

• To provide structural support

How long did it take for the pigs to develop blood vessel networks in the bioengineered lungs?

• One week

• Two weeks

• Three weeks

• Four weeks

What was the outcome observed in pigs with bioengineered lungs?

• They developed new lung tissue

• They grew blood vessel networks

• They rejected the lungs

• They showed no changes