Sweat Glands Heal Injuries (image) Fraunhofer-Gesellschaft Caption A biopsy punch arranges the biopolymer substrate into the appropriate shape (left). Cells then colonize these circular discs in cell culture vessels (right). Credit Fraunhofer EMB Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. 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.