
1) Gut flora bacterium
Found on
https://www.crosswordclues.com/clue/fusobacteria

Fusobacteria are obligately anaerobic non-sporeforming Gram-negative bacilli. Since the first reports in the late nineteenth century, various names have been applied to these organisms, sometimes with the same name being applied to different species. More recently, not only have there been changes to the nomenclature, but also attempts to differen...
Found on
http://en.wikipedia.org/wiki/Fusobacteria
No exact match found.