B-roll of scientists (VIDEO) Northwestern University This video is under embargo. Please login to access this video. Caption B-roll from inside the lab of corresponding study author Gemma Carvill at Northwestern University Feinberg School of Medicine. Credit Northwestern University Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.