spirochete, (order Spirochaetales), any of a group of spiral-shaped bacteria, some of which are serious pathogens for humans, causing diseases such as syphilis, yaws, Lyme disease, and relapsing fever. Examples of genera of spirochetes include Spirochaeta, Treponema, Borrelia, and Leptospira.

Spirochaetes are chemoheterotrophic in nature, with lengths between 3 and 500 μm and diameters around 0.09 to at least 3 μm. [7]

2021年6月8日 · Spirochetes are long, thin, flexible, spirally coiled helical bacilli. These motile, gram-negative bacilli are classified into eight genera primarily on the basis of habitat, pathogenicity, phylogeny, morphological and physiological characteristics.

Spirochetes, tiny spiral-shaped bacteria sometimes found on the surface of epithelial cells, represents a well-debated conundrum in the gastroenterology and pathology world. Colonization of spirochetes in the lower gastrointestinal tract is a rare condition and can lead to a myriad of presentations, ranging from asymptomatic individuals to ...

Spirochetes are long and slender bacteria, usually only a fraction of a micron in diameter but 5 to 250 microns long. They are tightly coiled, and so look like miniature springs or telephone cords.

2017年4月28日 · A spirochete is a type of bacteria within the phylum Spirochetes. The spirochetes are so called because they are very long, thin shape and helically coiled, hence they have a spiraling corkscrew shape. The helical shape is one of three morphological categories of the prokaryotes.

2023年1月31日 · Infections caused by spirochete are known as spirochetal infections. Some of the spirochetes cause diseases in humans. These are gram-negative, mobile, spiral bacteria with a length of 3 to 500 micrometers.

Spirochetes are a phylogenetically ancient and distinct group of microorganisms. Because of their propensity to cause diseases in humans, B. burgdorferi and T. pallidum are the two most well-studied spirochetes.

Spirochetes, which are members of a group of gram-negative bacteria with a spiral or flat-wave cell body, also show flagella-dependent motility, but their flagella are hidden within the periplasmic space and are thus called periplasmic flagella (PFs).

Spirochetes (also spelled spirochaetes) are a group of long, slender, curved, spiral-shaped prokaryotes that exist widely in nature. Some spirochetes are important human pathogens.