Microvilli (IMAGE) Washington University School of Medicine Caption The lining of a healthy intestine features tightly packed projections called microvilli that absorb nutrients (left), but exposure to a bacterial toxin damages the microvilli (right) and impairs nutrient absorption. Researchers at Washington University School of Medicine in St. Louis have discovered that vaccinating mice against the toxin can prevent intestinal damage, a finding that suggests new ways to prevent malnutrition and stunting in children. Credit Alaullah Sheikh/Washington University Usage Restrictions This image is to be used in accordance with the mission, policies and guidelines of Washington University in St. Louis. Visit https://wustl.edu/about/compliance-policies/media-policies/multimedia-use/ for more information. License Original 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.