| streptococcal pneumonia | Pneumonia due to Streptococcus pyogenes. (05 Mar 2000) |
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| streptococcal toxins | Group of haemolytic exotoxins released by Streptococci. _ haemolysin: 26-39 Kd (four types), forms ring like structures in membranes (see Streptolysin O). Lipid target unclear. _ haemolysin: a hot cold haemolysin with sphingomyelinase C activity. _ haemolysin: complex of two proteins (29 and 26 kD) that act synergistically, rabbit erythrocytes particularly sensitive. _ toxin: heat stable peptide (5 kD) with high proportion of hydrophobic amino acids. Seems to act in a detergent like manner (c.f. Subtilysin), but may form hydrophilic transmembrane pores by cooperative interaction with other _ toxin molecules. Leucocidin (Panton Valentine leucocidin): two components f (fast migration on CM cellulose column: 32 kD) and s (slow: 38 kD). Mode of action contentious. See: Streptococcus, streptolysins O and S, erythrogenic toxin. (18 Nov 1997) |
| streptococci | <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, impetigo, pneumonia, meningitis, pharyngitis, lymphadenitis and wound infections. Streptococcus pneumoniae is the main culprit in lobar and bronchopneumonia. 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. Haemolytic streptococci (viridans streptococci) produce limited haemolysis on blood agar, include Streptococcus mutans, Streptococcus salivarius and Streptococcus pneumoniae. Beta haemolytic streptococci, of which Streptococcus 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. Alpha streptococci are nonhaemolytic (e.g. Streptococcus faecalis). (30 Sep 1997) |
| streptococcic | Relating to or caused by any organism of the genus Streptococcus. (05 Mar 2000) |
| streptococcins | Bacteriocins released by streptococci. (18 Nov 1997) |
| streptococcosis | Any streptococcal infection. (05 Mar 2000) |
| 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, impetigo, pneumonia, meningitis, pharyngitis, lymphadenitis and wound infections. Streptococcus pneumoniae is the main culprit in lobar and bronchopneumonia. 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. Haemolytic streptococci (viridans streptococci) produce limited haemolysis on blood agar, include Streptococcus mutans, Streptococcus salivarius and Streptococcus pneumoniae. Beta haemolytic streptococci, of which Streptococcus 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. Alpha streptococci are nonhaemolytic (e.g. Streptococcus faecalis). (30 Sep 1997) |
| Streptococcus acidominimus | A species found in the bovine vagina and on the skin of calves. (05 Mar 2000) |
| streptococcus agalactiae | A bacterium which causes mastitis in cattle and occasionally in man. (12 Dec 1998) |
| Streptococcus anginosus | A species found in the human throat, sinuses, abscesses, vagina, skin, and faeces; this organism has been associated with glomerular nephritis and various types of mild respiratory diseases. (05 Mar 2000) |
| streptococcus bovis | A species of gram-positive, coccoid bacteria commonly found in the alimentary tract of cows, sheep, and other ruminants. It occasionally is encountered in cases of human endocarditis. This species is nonhemolytic. (12 Dec 1998) |
| Streptococcus constellatus | A species found in tonsils, purulent pleurisy, appendix, the nose, throat, and gums, and infrequently on the skin and in the vagina. (05 Mar 2000) |
| Streptococcus durans | A species found in dried milk powder and in the intestines of humans and other animals. (05 Mar 2000) |
| Streptococcus dysgalactiae | A species causing acute mastitis in cattle. (05 Mar 2000) |
| streptococcus equi | A species of gram-positive, coccoid bacteria isolated from abscesses in submaxillary glands and mucopurulent discharges of the upper respiratory tract of horses. This organism belongs to group c streptococci with regards to antigen response and is known to cause strangles. The subspecies s. Zooepidemicus is also considered a pathogen of horses. (12 Dec 1998) |
Synonyms :
Synonyms : Anguilluliases, Strongyloidiases
Synonyms :
Synonyms :
Synonyms : Isotopes, Strontium
| straight sinus |
an unpaired sinus of the dura mater
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| stroke |
(sports) the act of swinging or striking at a ball with a club or racket or bat or cue or hand; "it took two strokes to get out of the bunker"; "a good shot require good balance and tempo"; "he left me an almost impossible shot" throw: the maximum movement available to a pivoted or reciprocating piece by a cam a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain a light touch the oarsman nearest the stern of the shell who sets the pace for the rest of the crew touch lightly and with affection, with brushing motions; "He stroked his long beard" solidus: a punctuation mark (/) used to separate related items of information strike a ball with a smooth blow a mark made by a writing implement (as in cursive writing) row at a particular rate any one of the repeated movements of the limbs and body used for locomotion in swimming or rowing a single complete movement treat gingerly or carefully; "You have to stroke the boss"
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| Streptomycetaceae |
higher bacteria typically aerobic soil saprophytes
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| strain |
(physics) deformation of a physical body under the action of applied forces stress: difficulty that causes worry or emotional tension; "she endured the stresses and strains of life"; "he presided over the economy during the period of the greatest stress and danger"- R.J.Samuelson tune: a succession of notes forming a distinctive sequence; "she was humming an air from Beethoven" (psychology) nervousness resulting from mental stress; "his responsibilities were a constant strain"; "the mental strain of staying alert hour after hour was too much for him" strive: to exert much effort or energy; "straining our ears to hear" breed: a special variety of domesticated animals within a species; "he experimented on a particular breed of white rats"; "he created a new strain of sheep" try: test the limits of; "You are trying my patience!" form: (biology) a group of organisms within a species that differ in trivial ways from similar groups; "a new strain of microorganisms" use to the utmost; exert vigorously or to full capacity; "He really extended himself when he climbed Kilimanjaro"; "Don't strain your mind too much" breed: a lineage or race of people sift: separate by passing through a sieve or other straining device to separate out coarser elements; "sift the flour" injury to a muscle (often caused by overuse); results in swelling and pain tense: cause to be tense and uneasy or nervous or anxious; "he got a phone call from his lawyer that tensed him up" tenor: the general meaning or substance of an utterance; "although I disagreed with him I could follow the tenor of his argument" become stretched or tense or taught; "the bodybuilder's neck muscles tensed;" "the rope strained when the weight was attached" striving: an effortful attempt to attain a goal filter: remove by passing through a filter; "filter out the impurities" an intense or violent exertion puree: rub through a strainer or process in an electric blender; "puree the vegetables for the baby" song: the act of singing; "with a shout and a song they marched up to the gates" deform: alter the shape of (something) by stress; "His body was deformed by leprosy"
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| streptococcal |
of or relating to or caused by streptococci
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| STR | a quark with an electric charge of -1/3 and a mass 988 times that of an electron and a strangeness of -1 |
|---|---|
| STR | in a strange way |
| STR | in a strange manner |
| STR | curious (or funny or interesting or odd or strange) though it may seem |
| STR | unusualness as a consequence of not being well known |
| STR | the quality of being alien or not native |
| STR | anyone who does not belong in the environment in which they are found |
| STR | struggle for breath |
| STR | constrict (someone's) throat and keep from breathing |
| STR | prevent the progress or free movement of |
| STR | die from strangulation |
| STR | conceal or hide |