Scientists ID Source of Damaging Inflammation After Heart Attack (image) Washington University School of Medicine Share Print E-Mail Caption In this image of heart tissue, a single cardiac B cell lymphocyte is visible (blue surrounded by bright red). This type of immune cell triggers damaging inflammation after a heart attack, according to researchers at Washington University School of Medicine in St. Louis. Their study also shows that the drug pirfenidone reduces this inflammatory response to injury and protects the heart from progressive damage. Credit Lora Staloch Usage Restrictions None 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.