Caterpillar (VIDEO) University of Wisconsin-Madison This video is under embargo. Please login to access this video. Caption As a cabbage caterpillar eats through leaves of the mustard plant Arabidopsis, a wave of calcium crossing the plant, revealed by fluorescent light, triggers defense responses in distant leaves. Credit Simon Gilroy/UW-Madison 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.