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*''[[Borrelia burgdorferi]]'', ''B. garinii'' и ''B. afzelii'', които причиняват [[Лаймска болест]] и
*[[Бледа спирохета]] (''Treponema pallidum''), която причинява [[сифилис]].
*[[Борелия рекурентис]] (''Borrelia recurrentis''), предизвикваща [[възвратен тиф]]<ref name=Schwan_1996>{{cite journal |author=Schwan T |title=Ticks and Borrelia: model systems for investigating pathogen-arthropod interactions |journal=Infect Agents Dis |volume=5 |issue=3 |pages=167–81 |year=1996 |pmid=8805079}}</ref>
The spirochaetes are divided into three families
* ''[[БорелияBrachyspira рекурентисpilosicoli]]'' и (''Borrelia[[Brachyspira recurrentisaalborgi]]''), предизвикващапричинители на [[възвратенчревна тифспирохетоза]]<ref name=Schwan_1996pmid14718105>{{cite journal |author=SchwanAmat TVillegas I, Borobio Aguilar E, Beloqui Perez R, de Llano Varela P, Oquiñena Legaz S, Martínez-Peñuela Virseda JM |title=Ticks and[Colonic Borreliaspirochetes: modelan systemsinfrequent forcause investigatingof pathogen-arthropodadult interactionsdiarrhea] |journallanguage=InfectSpanish; AgentsCastilian Dis|journal=Gastroenterol Hepatol |volume=527 |issue=31 |pages=167–8121–3 |year=19962004 |month=January |pmid=880507914718105 |doi= |url=}}</ref>
* ''[[Brachyspira pilosicoli]]'' и ''[[Brachyspira aalborgi]]'', причинители на [[чревна спирохетоза]]<ref name=pmid14718105>{{cite journal |author=Amat Villegas I, Borobio Aguilar E, Beloqui Perez R, de Llano Varela P, Oquiñena Legaz S, Martínez-Peñuela Virseda JM |title=[Colonic spirochetes: an infrequent cause of adult diarrhea] |language=Spanish; Castilian |journal=Gastroenterol Hepatol |volume=27 |issue=1 |pages=21–3 |year=2004 |month=January |pmid=14718105 |doi= |url=}}</ref>
Постулатът на Кавалие-Смит е, че спирохетите принадлежат към по-голям разред [[Нежнокожести]] (Gracillicutes).<ref name="csmith">{{cite journal | author = Cavalier-Smith, T. | title = Rooting the tree of life by transition analyses | doi = 10.1186/1745-6150-1-19 | journal = Biology Direct | volume = 1 | issue = 19 | year = 2006 | pages = 19 | pmid = 16834776 | last1 = Cavalier-Smith | first1 = T | pmc = 1586193 }}</ref>
==Филогения==
<!------------------------------------------------------------------------
TheНастоящата currentlyвъзприета accepted[[таксономия]] taxonomyсе isбазира basedна onСписъка theна [[прокариоти с установена номенклатура ({{lang-en|List of Prokaryotic names with Standing in Nomenclature ]] (LPSN}}) <ref>{{cite web |author = J.P. Euzéby | url=http://www.bacterio.cict.fr/classifphyla.html#Spirochaetes |title=Spirochaetes | accessdate=2013-03-20 |publisher=[[List of Prokaryotic names with Standing in Nomenclature]] (LPSN) [http://www.bacterio.cict.fr/introduction.html]}}</ref> andи [[на американския Център за биотехнологична информация ({{lang-en|National Center for Biotechnology Information ]], (NCBI )}})<ref>{{cite web |author = Sayers et al.| url=http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Undef&id=203691&lvl=6&lin |title=Spirochaetes |accessdate=2013-03-20 |publisher=[[National Center for Biotechnology Information]] (NCBI) taxonomy database [http://www.ncbi.nlm.nih.gov/Taxonomy/taxonomyhome.html/index.cgi]}}</ref> ▼==Phylogeny==
andи the[[филогения]]та phylogenyсе isбазира based onна 16S rRNA -based LTPпроекта releaseРодословно 111дърво byна [['всички живи организми ({{lang-en|The All-Species Living Tree' Project ]] }})<ref> [['"The All-Species Living Tree '" Project ]].{{cite web | url=http://www.arb-silva.de/fileadmin/silva_databases/living_tree/LTP_release_111/LTPs111_SSU_tree.pdf | title=16S rRNA-based LTP release 111 (full tree) | publisher=[[Silva Comprehensive Ribosomal RNA Database]] [http://www.arb-silva.de/projects/living-tree] | accessdate=2013-03-20}}</ref> ▼▲The currently accepted taxonomy is based on the [[List of Prokaryotic names with Standing in Nomenclature]] (LPSN) <ref>{{cite web |author = J.P. Euzéby | url=http://www.bacterio.cict.fr/classifphyla.html#Spirochaetes |title=Spirochaetes | accessdate=2013-03-20 |publisher=[[List of Prokaryotic names with Standing in Nomenclature]] (LPSN) [http://www.bacterio.cict.fr/introduction.html]}}</ref> and [[National Center for Biotechnology Information]] (NCBI)<ref>{{cite web |author = Sayers et al.| url=http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Undef&id=203691&lvl=6&lin |title=Spirochaetes |accessdate=2013-03-20 |publisher=[[National Center for Biotechnology Information]] (NCBI) taxonomy database [http://www.ncbi.nlm.nih.gov/Taxonomy/taxonomyhome.html/index.cgi]}}</ref>
▲and the phylogeny is based on 16S rRNA-based LTP release 111 by [['The All-Species Living Tree' Project]] <ref>[['The All-Species Living Tree' Project]].{{cite web | url=http://www.arb-silva.de/fileadmin/silva_databases/living_tree/LTP_release_111/LTPs111_SSU_tree.pdf | title=16S rRNA-based LTP release 111 (full tree) | publisher=[[Silva Comprehensive Ribosomal RNA Database]] [http://www.arb-silva.de/projects/living-tree] | accessdate=2013-03-20}}</ref>
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