Cows In A Field (IMAGE) University of Eastern Finland Caption Exposure to farm animals in early childhood modifies the key allergy-related immunological mechanisms. Credit Janne Pietikäinen Usage Restrictions Please mention the photo credit when using the photo. 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.