| microbial diversity in nonsulfur, sulfur and iron geothermal steam vents. | fumaroles, commonly called steam vents, are ubiquitous features of geothermal habitats. recent studies have discovered microorganisms in condensed fumarole steam, but fumarole deposits have proven refractory to dna isolation. in this study, we report the development of novel dna isolation approaches for fumarole deposit microbial community analysis. deposit samples were collected from steam vents and caves in hawaii volcanoes national park, yellowstone national park and lassen volcanic national ... | 2011 | 21223339 |