<unk>  is a genus of bacteria included among the proteobacteria, a large group of Gram-negative forms.<unk>  are diplococci that resemble coffee beans when viewed microscopically. The genus includes the species  N. gonorrhoeae (also called the gonococcus), which causes gonorrhoea, and N. meningitidis (also called the meningococcus), one of the most common causes of bacterial meningitis and the causative agent of meningococcal septicaemia.
This genus also contains several, believed to be nonpathogenic species, like:<unk>  cinerea<unk>  elongata<unk>  flavescens<unk>  lactamica<unk>  mucosa<unk>  polysaccharea<unk>  sicca<unk>  subflava
Neisseria
Streptococcus
Pseudomonas
Corynebacterium
Legionella
Listeria
Enterococcus
Brucella