bacillus

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Related to Bacilli: cocci

bacillus

(bəsĭl`əs), any rod-shaped bacterium or, more particularly, a rod-shaped bacterium of the genus Bacillus. Some bacterium in the genus cause disease, for example B. anthracis is the cause of anthraxanthrax
, acute infectious disease of animals that can be secondarily transmitted to humans. It is caused by a bacterium (Bacillus anthracis) that primarily affects sheep, horses, hogs, cattle, and goats and is almost always fatal in animals.
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; others are useful in the production of antibioticsantibiotic,
any of a variety of substances, usually obtained from microorganisms, that inhibit the growth of or destroy certain other microorganisms. Types of Antibiotics
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 (e.g., gramicidingramicidin
, antibiotic obtained from the bacterial species Bacillus brevis, which is found in soil. Gramicidin is particularly effective against gram-positive bacteria (see Gram's stain).
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 and bacitracinbacitracin
, antibiotic produced by a strain of the bacterial species Bacillus subtilis. It is widely used for topical therapy such as for skin and eye infections; it is effective against gram-positive bacteria, including strains of staphylococcus that are resistant to
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). Many organisms earlier classified as Bacillus species are now placed in different genera but continue to be referred to as baccili.

bacillus

[bə′sil·əs]
(microbiology)
Any rod-shaped bacterium.

Bacillus

[bə′sil·əs]
(microbiology)
A genus of bacteria in the family Bacillaceae; rod-shaped cells are aerobes or facultative anaerobes and usually produce catalase.
References in periodicals archive ?
If after treatment the FDA-test was negative, in 95 percent of cases more elaborate tests didn't find active bacilli in the patient's sputum either.
Molecular characteristics define the isolates previously labeled as oryx bacilli as a distinct subspecies in the M.
If, in fact, differential temperatures within boxes had induced different proportions of bacilli to sporulate, such variation would disappear once the spores returned to the vegetative state in the incubator.
The bacilli kept at the laboratory were intended for use in making anthrax vaccines for domestic animals, the paper said.
Ever since, around 2,000 people annually have been infected with the colon bacilli.
People are most likely to be contagious when their sputum contains bacilli, when they cough frequently and when the extent of their lung disease, as revealed by a chest x-ray, is great.
coli are gram-negative bacilli that exist widely in the environment, mainly in water and soil, the main site for development of antimicrobial drug resistance (1,2).
In all tissues where tuberculosis had recently developed and was progressing rapidly, large numbers of bacilli could be visualized.
Gram-stained smears showed gram-negative bacilli in long chains.
A cytospin slide prepared from the broth was positive for acid-fast bacilli by Kinyoun stain.
However, direct microbiologic confirmation of BCG infection was lacking because cultures were negative and Ziehl-Neelsen and periodic acid-Schiff staining did not show acid-fast bacilli, other bacteria, or fungi in these specimens.
Many years of work on acid-fast organisms did little to expand knowledge of tubercle bacilli, but the work opened avenues of research on the host's responses to infection.