? Viridans streptococcus
Scientific classification
Kingdom: Eubacteria Phylum: Firmicutes Class: Bacilli Order: Lactobacillales Family: Streptococcaceae Genus: Streptococcus

Viridans streptococcus is a pseudo-taxonomic term for a large group of generally non-pathogenic, commensal streptococcal bacteria that are either α-hemolytic and produce a green (hence the name viridans) coloration on blood agar plates, or non haemloytic. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria is also the fictional name of a warring nation under Benzino Napaloni as dictator, in the 1940 film The Great Dictator... Classes Bacilli Clostridia Mollicutes The Firmicutes are a division of bacteria, most of which have Gram-positive stains. ... Orders Bacillales Lactobacillales The term bacilli (singular bacillus) is used to refer to any rod-shaped bacteria. ... Families Aerococcaceae Carnobacteriaceae Enterococcaceae Lactobacillaceae Leuconostocaceae Streptococcaceae The Lactobacillales are an order of Gram-positive bacteria, placed within the Firmicutes. ... Genera Lactococcus Lactovum Pilibacter Streptococcus The Streptococcaceae is a family of Gram-positive bacteria, placed within the order of Lactobacillales. ... Common Clownfish (Amphiprion ocellaris) in their magnificent sea anemone (Heteractis magnifica) home. ... Species S. agalactiae S. bovis S. mutans S. pneumoniae S. pyogenes S. salivarius S. sanguinis S. suis Streptococcus viridans group etc. ... Some microbiological techniques use the appearance of bacterial colonies on culture media to help identify the species of organisms that have been isolated. ... An agar plate is a sterile Petri dish that contains agar plus nutrients, and is used to culture bacteria or fungi. ...

Viridans streptococci can be differentiated from Streptococcus pneumoniae using an optochin test, as Viridans Streptococci is optochin resistant. Viridans streptococci also lack either the polysaccharide-based capsule typical of S. pneumoniae or the Lancefield antigens of the pyrogenic members of the genus. The organisms are most abundant in the mouth and one member of the group, S. mutans, is the etiologic agent of dental caries. Others may be involved in other mouth or gum infections. If they are introduced into the bloodstream they have the potential of causing endocarditis, particularly in individuals with damaged heart valves. Binomial name Streptococcus pneumoniae (Klein 1884) Chester 1901 Streptococcus pneumoniae is a species of Streptococcus that is a major human pathogen. ... Optochin is the component of P disk. ... Streptococcus mutans is a gram positive, facultative anaerobe, part of the streptococcus genus of bacteria. ... Etiology (alternately aetiology, aitiology) is the study of causation. ... Endocarditis is an inflammation of the inner layer of the heart, the endocardium. ...

Site and Sources:

• Mouth
• Skin
• Nasopharynx
• Heart
• Oropharynx

The diagnosis can be done by letting it grow on blood agar.