Planctomycete Bacterium's Internal Membranes Contain Nuclear Pore-Like Structures (IMAGE) PLOS Caption Pore-like structures of the bacterium Gemmata obscuriglobus scattered over membrane released from lysed cells (transmission electron microscopy of a negatively stained preparation. The large type of pore-like structure has inner and outer concentric rings around a central plug, resembling the detailed organization of a eukaryote nuclear pore. Credit Sagulenko et al (2017) Usage Restrictions All figures and photographic images will be published under a Creative Commons Attribution License (CCAL), which allows them to be freely used, distributed, and built upon as long as proper attribution is given. 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.