Cross Section of a Muscle Biopsy (image) University of Basel Share Print E-Mail Caption This is a cross section of a muscle biopsy: Blood vessels (red) between the muscle fibers and laminin-α2 (green), which surrounds each muscle fiber. Credit University of Basel, Biozentrum Usage Restrictions Give adequate attribution to original author. 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.