The human liver has amazing regeneration capabilities: Even if up to 70 percent of it is removed, the remaining tissue can regrow a full-sized liver within months. Taking advantage of this regenerative capability could give doctors many more options for treating chronic liver disease. MIT engineers have now taken a step toward that goal, by creating a new liver tissue model that allows them to trace the steps involved in liver regeneration more precisely than has been possible before. The new model can yield information that couldn’t be gleaned from…