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Gonorrhea is caused by the bacterium Neisseria gonorrhoeae and is a common sexually transmitted infection. In the US, its incidence is second only to chlamydia. The genus Neisseria contains many species; some are part of the normal human flora, and two are pathogenic and cause diseases in humans. When stained and examined in a microscope, Neisseria are coccus shaped bacteria that usually cluster in pairs. They are called gram-negative for the way they stain in the Gram test and have an outer membrane consisting of lipooligosaccharide (LOS or LPS), phospholipids and proteins. These bacteria are able to enter, survive, and grow in host cells.
Text – http://helpinggonorrhea.com/Gonorrhea+Cells.498.htm
Text – http://textbookofbacteriology.net/neisseria_2.html
Text – http://www.channing.harvard.edu/15.htm
Image – http://gsbs.utmb.edu/microbook/ch014.htm