<i>Halomonas</i> (IMAGE) DOE/Pacific Northwest National Laboratory Caption This is an electron micrograph of Halomonas sp. HL-48, a rare supplier of vitamin B12 in its microbial community. Credit Photo courtesy of PNNL Usage Restrictions Please use credit info. 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.