Neisseria
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Neisseria is a large genus of bacteria that colonize the mucous membranes of many animals. Of the 11 species that colonize humans, only two are pathogens: N. meningitidis and N. gonorrhoeae.
New York City agar
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The NYC medium or GC medium agar is a type of selective media used for isolating Gonococci and N. meningitidis.
The growth of Neisseria gonorrhoeae colonies on New York City medium agar
The growth of Neisseria meningitidis colonies on New York City Medium Agar