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Scientific classification
Kingdom: Bacteria
Phylum: Tenericutes
Class: Mollicutes
Order: Mycoplasmatales
Family: Mycoplasmataceae
Freundt 1955

Candidatus Hepatoplasma

The Mycoplasmataceae is a family of bacteria [1] in the order Mycoplasmatales. This family comprises the genera Mycoplasma and Ureaplasma.

In 1967 the Order Mycoplasmatales was incorporated into the class Mollicutes.[2] Many species are sexually transmitted and cause Pelvic inflammatory disease.[3]



Mycoplasma refers to a genus of bacteria that lack a cell wall and possess a three layered cellular membrane.[4] They can be parasitic or saprotrophic. Several species are sexually transmitted and pathogenic in humans. Others are found on cats, dogs, and barnyard fowl.


Ureaplasma is a genus of bacteria belonging to the family Mycoplasmataceae. As the name imples, ureaplasma is urease positive.

It includes the species:

External links


  1. E.A. Freundt The classification of the pleuropneumonia group of organisms (Borrelomycetales) International Bulletin of Bacteriological Nomenclature and Taxonomy, 1955, 5, 67-78.] (See page 73)
  2. Edward, D.G.; Freundt, E.A. (1967). "Proposal for Mollicutes as name of the class established for the order Mycoplasmatales" (PDF). Int J Syst Bacteriol. 17: 269–272.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  3. Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  4. Ryan KJ, Ray CG (editors) (2004). Sherris Medical Microbiology (4th ed.). McGraw Hill. pp. 409–12. ISBN 0-8385-8529-9. <templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>