Streptococcus

Genus of Gram positive cocci that grow in chains. Some species ( Strep. pyogenes in particular) are responsible for important diseases in humans (pharyngitis, scarlet fever, rheumatic fever): Strep. pneumoniae is the main culprit in lobar- and broncho-pneumonia. Streptococci have anti-phagocytic components (hyaluronic acid-rich capsule and M-protein), and release various toxins (streptolysins O and S, erythrogenic toxin) and enzymes (streptokinase, streptodornase, hyaluronidase, and proteinase). a -haemolytic streptococci (viridans streptococci) produce limited haemolysis on blood agar; include S. mutans , S. salivarius , S. pneumoniae . b -haemolytic streptococci, of which S. pyogenes is the only species, though there are many serotypes, produce a broad zone of almost complete haemolysis on blood agar as a result of streptolysin O and S release. g -streptococci are non-haemolytic (eg. S. faecalis ). ...

streptococcus

[n] - spherical gram-positive bacteria occurring in pairs or chains
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Streptococcus

bacterium. Synonyms: Rose, Saint Anthony's Fire
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Streptococcus

A type of bacteria.
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Streptococcus

Streptococcus: A group of bacteria, familiarly known as strep, that cause a multitude of diseases. The name comes from the Greek strepto- meaning twisted + kokkos meaning berry, and that is exactly what strep look like under the microscope, like a twisted bunch of little round berries. Illness caused by strep includes strep throat, strep pneumonia,...
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Streptococcus

Strep`to·coc'cus noun ; plural Streptococci . [ New Latin , from Greek ... pliant, curved + ... a grain, seed.] (Biol.) A long or short chain of micrococci, more or less curved.
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Streptococcus

<bacteria, organism> A genus of bacteria that are gram-positive cocci, often occurring in chains of varying length. Some pathogenic species produce exotoxins. In man, streptococcal species are responsible for numerous infections such as scarlet fever, tonsillitis, erysipelas (skin infection), endocarditis, rheumatic fever, glomerulonephritis,...
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streptococcus

streptococci noun spherical Gram-positive bacteria occurring in pairs or chains; cause e.g. scarlet fever and tonsillitis
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Streptococcus

(strep″to-kok´әs) a genus of gram-positive, facultatively aerobic cocci (family Streptococcaceae) occurring in pairs or chains. It is separable into the pyogenic group, the viridans group, the enterococcus group, and the lactic group. The first group includes the beta-hemolytic human and animal pathoge...
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streptococcus

(strep″to-kok´әs) a bacterium of the genus Streptococcus. adj., streptococ´cal, streptococ´cic., adj. hemolytic streptococcus any streptococcus capable of hemolyzing erythrocytes, classified as either α-hemolytic (or viridans type), which on blood agar produces a...
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Streptococcus

• (n.) A long or short chain of micrococci, more or less curved.
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Streptococcus

group of spheroidal bacteria belonging to the family Streptococcaceae. The term streptococcus (`twisted berry`) refers to the bacteria`s ... [14 related articles]
Found on http://www.britannica.com/eb/a-z/s/171

Streptococcus

Streptococcus (strep tuh KOK uhs) A genus of spherical Gram-positive bacteria that usually occur in pairs or chains; most strains are nonmotile. Most species are parasites or pathogens of animals, often occurring in the respiratory or alimentary tracts. Some species are hemolytic; that is, they destroy red blood cells, and cause such diseases...
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streptococcus

streptococcus (strep"tukok'us) , any of a group of gram-positive bacteria, genus Streptococcus, some of which cause disease. Streptococci are spherical and divide by fission, but they remain attached and so grow in beadlike chains. The incidence and severity of streptococcal diseases decreas...
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Streptococcus

Streptococcus is a genus of spherical Gram-positive bacteria occurring widely in nature, typically as chains or pairs of cells. Many are saprophytic and exist as usually harmless commensals inhabiting the skin, mucous membranes, and intestine of humans and animals. Others are parasites, some of which cause diseases, including scarlet fever (Strepto...
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Streptococcus

Type: Term Pronunciation: strep′tō-kok′ŭs Definitions: 1. A genus of nonmotile (with few exceptions), non-spore-forming, aerobic to facultatively anaerobic bacteria (family Lactobacillaceae) containing gram-positive, spheric or ovoid cells that occur in pairs or in short or long chains. Dextrorotatory lactic acid is the main p...
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streptococcus

Type: Term Pronunciation: strep′tō-kok′ŭs, -kok′sī Definitions: 1. A term used to refer to any member of the genus Streptococcus.
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Streptococcus

S. anginosus S. bovis S. canis S. constellatus S. dysgalactiae S. equinus S. iniae S. intermedius S. milleri S. mitis S. mutans S. oralis S. parasanguinis S. peroris S. pneumoniae S. pseudopneumoniae S. pyogenes S. ratti S. salivarius S. tigurinus S. thermophilus S. sanguinis S. sobrinus S. suis S. uberis S. vestibularis S. viridans Streptococcus ...
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