"Francisella opportunistica" Challacombe et al. 2017 Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Gammaproteobacteria order Thiotrichales family Francisellaceae genus Francisella species Francisella opportunistica Name Homonyms Francisella opportunistica Francisella opportunistica Dietrich et al. "Francisella opportunistica" Challacombe et al. 2017