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==Introduction==

==Introduction==

[[File:Brachyspira pilosicoli.jpg|200px|right|thumb|''Brachispira pilosicoli'' in culture, stained by Gram stain.]]

[[File:Brachyspira pilosicoli.jpg|200px|right|thumb|Figure 1: ''Brachispira pilosicoli'' in culture, stained by Gram stain.]]

'''''Brachyspira pilosicoli''''' is a Gram-negative, spiral shaped bacterium. It is an anaerobic [[Spirochaetes|spirochaete]], closely related to ''[[Brachyspira hyodysenteriae]]''. The bacterium is loosely coiled and is 6-11µm long (see image). It is only weakly haemolytic in contrast to ''B. hyodysenteriae''.

'''''Brachyspira pilosicoli''''' is a Gram-negative, spiral shaped bacterium. It is an anaerobic [[Spirochaetes|spirochaete]], closely related to ''[[Brachyspira hyodysenteriae]]''. The bacterium is loosely coiled and is 6-11µm long (Figure 1). It is only weakly haemolytic in contrast to ''B. hyodysenteriae''.

The bacterium may have '''8-12 internalised flagellae''', inserted at either pole of the cell between the inner and outer membranes. The outer membrane contains '''lipopolysaccharide''' (endotoxin). This pathogen can also cause '''zoonotic''' disease in people.  

The bacterium may have '''8-12 internalised flagellae''', inserted at either pole of the cell between the inner and outer membranes. The outer membrane contains '''lipopolysaccharide''' (endotoxin). This pathogen can also cause '''zoonotic''' disease in people.