NK Cells in Action (VIDEO) Imperial College London This video is under embargo. Please login to access this video. Caption High-resolution live cell imaging showa an NK cell contacting a diseased cell. NK cell proteins essential to detecting the diseased cell organize into a ring within which "killing" granules are delivered to the diseased cell. Credit Narration by Dr. Alice Brown. Film compiled by Warwick Bromley. Copyright Imperial College London Usage Restrictions None License Licensed 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.