There is a fair bit of focus on it. I'm not sure if that is because of the ease of building them or the need for it - it is a fairly critical organ and there i

There is a fair bit of focus on it. I'm not sure if that is because of the ease of building them or the need for it - it is a fairly critical organ and there is a shortage of donors. I believe the challenge is the vascular (blood vessel) network, which is quite developed and important to the liver's function. A lab-grown liver could be quite advantageous to a donated liver - the lab would use the person's own cells to make the tissue. Rejection becomes less of an issue. Today, liver recipients need to go on immuno-suppressants. It is inconvenient to take dozens of pills a day and these people are more prone to illness.