Morphology • Gram-positive cocci, 0.5-0.75 µm • Arranged in chains, usually 10 or more, but for S. pneumoniae usually as diplococci • Catalase negative • Non-motile, except 2 Enterococcal species • Facultative anaerobic • Enriched media • Colonies on blood agar are either – -haemolytic, – - haemolytic, or – non-haemolytic
Gram-positive cocci in chains
Classification • • • •
Lancefield 1930 (A.B.C…….) ß- Hemolysis (A.B.C & some D strains) α-hemolysis( St.pneumonia & Viridans St.) Nonhemolytic( nonpathogen)
Beta hemolysis
Alpha hemolysis
St.pyogenes (ß-hemolytic streptococci) • Group A • Throat ,Nasopharynx and skin
Post streptococcal infections group A • Rheumatic fever After tonsillitis or pharyngitis ( carditis,abnormal ECG, painful arthritis, chorea and fever) • Acute glumerulonephritis
Group D streptococci and Enterococci • • • • •
E.faecium E.faecalis(UTI,endocarditis,speticemia) E.durans St.equinus Bacteremia and endocarditis St.bovis
Streptococcus agalactia(group B) • Puerperal, neonatal, ulceral and skin infections. susceptible: Diabetes and vascular disesases
Laboratory diagnosis • Rapid test ( monoclonal antibodies Kits) • Cultivation on sheep blood agar or enrichment media • Beta hemolysis group A(C,G,D) • ASLO
Jan 15, 2000 - 5.5 Proving Properties of Mathematical Morphology. To construct proofs using mathematical morphology, you employ algebraic proofs using ...
In contrast, [Bybee-]Hooper's (1976) True. Generalization Condition requires genuine phonological rules to be transparent, and therefore not to be contradicted ...
bust to ambiguous branch discontinuities, variability of inten- sity and curvature of fibres, arbitrary cross-sections, noise and irregular background illumination.
... example shows that the process was still productive during the Spanish occupation of Taiwan. .... Grammar notes on Siraya, an extinct Formosan language.
(1) A northern area with an open platform characterized by a thick carbonate sediment wedge that allows an important off-bank material export from the inner ...
W e first define an " affine invariant distance " which will be a substitute to the .... portions of the curve with a fixed number s of points, and we store, for each.
1UMR INRA/URCA (FARE), ESIEC, BP 1029, 51686 Reims cedex 2, France. 2ECPM (LIPHT), ULP, 25 ... better the blend structure formation during the process.
and accounted for 31.2% of the total shock episodes. There is clearly a need for further improvements in arrhythmia discrimination. The discrimination in ICDs is ...
is impossible to peer directly within or easily take a sample measurement from within a .... faces, constraints on the transmission of seismic energy, and by an improved ... cifically on what these bodies tell us about asteroid interiors and strength
both the constraints and the character's morphology are not known in ...... [16] L.-C. T. Wang and C. C. Chen, âA combined optimization method for solving the ...
capture system which tracks the position of the head of the user .... The same way, all the intermediate body parts are modeled ..... the SIAMES Project of the INRIA/IRISA Laboratory ... mechanical engineering from the National School of Ponts.
superluminal sources in the laboratory and numerical models of the emission ... calculate the radiation from such polarization currents.10â12 In Ref. 10, the .... the other hand, is subject to diffraction as in any other radiation beam: δÏP .....
May 8, 2018 - Abstract Understanding nonstationary tides in tidal rivers is a major ... river discharges, natural morphological changes, and gravel extraction.
rates, however, vary along strike due to platform top morphology combined with the variable ...... due to the mass transport, which ended in large megablocks.
metal alloys powders need to be accurately controlled in terms of chemical purity ..... full-scale gas atomization of nickel-based alloys. Scand. J. Metall.
the age of a river is unknown and may not pre-date fault ..... in the two trenches were dated at the accelerator mass spectrometer at Gif-sur-Yvette (France).
A case study for rostrum dace. Leuciscus ... stepwise discriminant analysis revealed that fish from the ... scale morphology of 2 rostrum dace samples originating.
