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{{Taxobox
| image = Bacillus subtilis Gram.jpg
| image_width = 220px
| image_caption = ''[[Bacillus subtilis]]'', Gram stained
| color = lightgrey
| name = Bacilli
| regnum = [[Bacterium|Eubacteria]]
| divisio = [[Firmicutes]]
| classis = '''Bacilli'''
| subdivision_ranks = Orders
| subdivision = 
[[Bacillales]]<br>
[[Lactobacillales]]
}}
{{SI}}


== Word Ambiguity ==

This type of bacteria is shaped like a rod. Usually bacteria separate but sometimes they will stick together. This bacteria can cause tuberculosis in humans. 

This article refers to '''Bacilli''' in the sense of the class that includes the genus ''Bacillus''..

Although ''Bacillus'', capitalized and italicized, specifically refers to the genus, the word 'bacillus' may also be used to describe any single rod-shaped bacterium, and in this sense, bacilli are found in many different taxonomic groups of bacteria.

Likewise, '''Bacilli''' refers to the particular class ''Bacillus'' belongs to, while bacilli are any rod-shaped bacteria.

It should be noted that the cell morphology term ''bacillus'' does not necessarily indicate [[Gram-positive]] staining, as ''E. coli'' is a Gram-negative, rod-shaped bacteria.

== The Class Bacilli ==

Taxonomically, the term '''Bacilli''' refers to a class of bacteria of the division (phylem) [[Firmicutes]]. It includes the orders [[Bacillales]] and [[Lactobacillales]], and lower down the taxonomic tree includes the genus ''[[Bacillus]]'', along with other [[Gram-positive]] bacteria such as ''[[Listeria]]''.




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[[Category:Bacteria]]

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