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Bacilli
Bacilli refers to a taxonomic class of bacteria. It includes two orders, Bacillales and Lactobacillales, which contain several well-known pathogens such as ''Bacillus anthracis'' (the cause of anthrax).
==Ambiguity==
Several related concepts make use of similar words, and the ambiguity can create considerable confusion. The term "''Bacillus''" (capitalized and italicized) is also the name of a genus that, among many other genera, falls within the class Bacilli.
Also, "bacillus" (or the plural "bacilli") can be a generic term to describe the morphology of any rod-shaped bacterium. This general term does not mean that the subject is a member of class Bacilli or genus ''Bacillus''. Thus, it does not necessarily imply a similar group of characteristics. Not all members of class Bacilli are rod-shaped (''Staphylococcus'' is spherical), and many other rod-shaped bacteria that do not fall within that class (''Clostridium kamina dalla kotta'' is rod-shaped but very different taxonomically) exist. Moreover, the general term "bacillus" does not necessarily indicate the Gram-positive staining common to class Bacilli. For example, ''E. coli'' is a rod-shaped bacterium that could, therefore, be described as "a bacillus", but it stains Gram-negative and does not belong to genus ''Bacillus'' or class Bacilli. Some microbiologists have forsaken the general "bacillus" term because of the confusion it can create.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Bacilli」の詳細全文を読む
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