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16S rRNA RefSeq: V15.22    Genomic RefSeq: V9.15
Genus: Neisseria
Lineage: Bacteria;Proteobacteria;Betaproteobacteria;Neisseriales;Neisseriaceae;Neisseria
Overview: Bacteria of the genus Neisseria are abundant in the mouth, making up 2-10% of the bacteria at most oral sites.

Ecological role/importance in health and disease: Several of the 20 species of Neisseria in HOMD are common members of the normal oral microflora. For example, N. flavescens, N. perflava, and N. subflava are abundant on the tongue dorsum and N. elongata, N. mucosa, and N. oralis in dental plaque. Other species, such as N. meningitidis and N. gonorrhoeae, are human pathogens included in HOMD as reference sequences even though they are not generally detected in the mouth.
eHOMD Taxonomy
LifeCellular Organisms
 DomainBacteria (788) Abundance
  PhylumProteobacteria (141) Abundance
   ClassBetaproteobacteria (50) Abundance
    OrderNeisseriales (31) Abundance
     FamilyNeisseriaceae (31) Abundance
      GenusNeisseria (20) Abundance
       Species       Neisseria bacilliformis (HMT-013) Abundance
       Neisseria cinerea (HMT-956) Abundance
       Neisseria elongata (HMT-598) Abundance
       Neisseria flava (HMT-609) Abundance
       Neisseria flavescens (HMT-610) Abundance
       Neisseria gonorrhoeae (HMT-621) Abundance
       Neisseria lactamica (HMT-649) Abundance
       Neisseria macacae (HMT-099) Abundance
       Neisseria meningitidis (HMT-669) Abundance
       Neisseria mucosa (HMT-682) Abundance
       Neisseria oralis (HMT-014) Abundance
       Neisseria perflava (HMT-101) Abundance
       Neisseria polysaccharea (HMT-737) Abundance
       Neisseria sicca (HMT-764) Abundance
       Neisseria sp._HMT_018 (HMT-018) Abundance
       Neisseria sp._HMT_020 (HMT-020) Abundance
       Neisseria sp._HMT_499 (HMT-499) Abundance
       Neisseria sp._HMT_523 (HMT-523) Abundance
       Neisseria subflava (HMT-476) Abundance
       Neisseria weaveri (HMT-092) Abundance