A Genetic Toolkit (IMAGE) Universität Bayreuth Caption Top right: Schematic of a cell of the magnetic bacterium Magnetospirillum gryphiswaldense used in this study, showing its intracellular chain of magnetosome particles. Each cell has a length between three and five micrometers. Bottom left: Single magnetosome with an iron oxide core enveloped by a membrane. Different functional groups from foreign organisms were genetically fused to specific proteins of the magnetosome membrane. Credit Image: Frank Mickoleit / Clarissa Lanzloth. 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.