Human Primary Dermal Fibroblasts (IMAGE) Drexel University Caption Fibroblast cells, the main building blocks of connective tissue, are studied for their survival responses to stress. Credit Drexel University 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.