Section Through Bird Tissue (IMAGE) University of Veterinary Medicine -- Vienna Caption Using their RNA-staining method, plasmodia become visible in black. Credit Herbert Weissenböck / Vetmeduni Vienna 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.