Sham and Apex Resected (AR) Heart at Day 21 and 37 after Surgery (image) Cell Press Share Print E-Mail Caption The apex is still missing in AR hearts and scarformation with connective tissue and fat is seen. Credit Stem Cell Reports, Andersen et al. Usage Restrictions Credit Required Share Print E-Mail 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.