Streptococcus mitis - Wiki. Streptococcus mitis is a mesophilic alpha-hemolytic species of Streptococcus that inhabits the human mouth.
It is a Gram positive, coccus, facultative anaerobe and catalase negative. It can cause endocarditis.[1] It has been widely reported that this organism survived for over two years on the Surveyor 3 probe on the moon; but some NASA scientists suggest this may be a result of contamination during or after return of Surveyor parts to Earth, as the person assembling the camera may have sneezed.[2] Neisseria elongata - Wiki. Neisseria - Wiki. Neisseria is a large genus of bacteria that colonize the mucosal surfaces of many animals.
Of the 11 species that colonize humans, only two are pathogens, N. meningitidis and N. gonorrhoeae. Most gonoccocal infections are asymptomatic and self-resolving, and epidemic strains of the meningococcus may be carried in >95% of a population where systemic disease occurs at <1% prevalence. Neisseria species are Gram-negative bacteria included among the proteobacteria, a large group of Gram-negative forms.
Gut - BMJ Journals. Mouth bacteria linked to pancreatic cancer.