Bacteriologic Chart  1. Gonococcus spp.  2. Pneumococcus spp.  3, Streptococcus pyogenes  4. Micobacterium tuberculosis  5. Vibrio cholerae  6. Corynebacterium diphtheriae  7. Bacterium typhosum  8. Bacterium dysenteriae  9. Achorion Schonleinii [favus fungus]  10. Bacillus anthracis  11. Bacillus aerogenes capsulatus  12. Yeast cells - With buds and ascospores depicted  Postmortem Pathology. Henry W. Cattell, 1906.

Bacteriologic Chart 1. Gonococcus spp. 2. Pneumococcus spp. 3, Streptococcus pyogenes 4. Micobacterium tuberculosis 5. Vibrio cholerae 6. Corynebacterium diphtheriae 7. Bacterium typhosum 8. Bacterium dysenteriae 9. Achorion Schonleinii [favus fungus] 10. Bacillus anthracis 11. Bacillus aerogenes capsulatus 12. Yeast cells - With buds and ascospores depicted Postmortem Pathology. Henry W. Cattell, 1906.

Streptococcus pyogenes and streptococcal disease

Streptococcus pyogenes and streptococcal disease

The group A streptococcus bacterium (Streptococcus pyogenes, or GAS) is a form of β-hemolytic Streptococcus bacteria responsible for most cases of streptococcal illness. Other types (B, C, D, and G) may also cause infection. Several virulence factors contribute to the pathogenesis of GAS, such as M protein, hemolysins, and extracellular enzymes.

The group A streptococcus bacterium (Streptococcus pyogenes, or GAS) is a form of β-hemolytic Streptococcus bacteria responsible for most cases of streptococcal illness. Other types (B, C, D, and G) may also cause infection. Several virulence factors contribute to the pathogenesis of GAS, such as M protein, hemolysins, and extracellular enzymes.

Beta hemolysis will appear as a clearing in the sheep blood agar. This is a characteristic of Streptococcus pyogenes the agent of Strep throat.

Beta hemolysis will appear as a clearing in the sheep blood agar. This is a characteristic of Streptococcus pyogenes the agent of Strep throat.

Streak plate of Streptococcus pyogenes (incubated @ 37 degrees C for 48 hrs) showing beta hemolysis, complete lysis of red blood cells, around the isolated colonies. Image taken using transmitted light.

Streak plate of Streptococcus pyogenes (incubated @ 37 degrees C for 48 hrs) showing beta hemolysis, complete lysis of red blood cells, around the isolated colonies. Image taken using transmitted light.

Streptococcus pyogenes | Cocci in chains | Gram (+)

Streptococcus pyogenes | Cocci in chains | Gram (+)

Crystal structure of peroxide stress regulator (PerR) from Streptococcus pyogenes provides functional insights into the mechanism of oxidative stress sensing.

Crystal structure of peroxide stress regulator (PerR) from Streptococcus pyogenes provides functional insights into the mechanism of oxidative stress sensing.

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