CATER Trainee Abby Stahl Defends Dissertation CATER Trainee Abby Stahl defended her dissertation, “A Study of Macrophages in the Aging Liver and in the Host Response to Engineered Lung Scaffolds,” on December 7, 2018. Pictured here, Dr. Bryan Brown introduces Ms. Stahl at her defense. The McGowan Institute For Regenerative Medicine2019-01-10T14:51:50+00:00January 10, 2019|CATER, News Archive|