Image de Streptococcus pyogenes
Description :
This 1977 photograph depicted a Petri dish with Streptococcus pyogenes-inoculated trypticase soy agar containing 5% defibrinated sheep's blood, i.e., blood agar plate (BAP), that had been "streaked", and "stabbed" with a wire loop, which had been dipped into primary culture medium. The BAP was incubated in a normal atmosphere at 35oC for 24 hours. In this case, the culture dish grew colonies of Gram-positive Group A beta-Streptococci (GAS) bacteria. The characteristic color changes, i.e., a clear, colorless region surrounding each colony in which the red blood cells in the blood agar medium had been destroyed, or "hemolyzed", indicated that these bacteria were indeed beta-hemolytic in nature. There is no magnification of this image.
Infection with GAS can result in a range of symptoms:
- No illness
- Mild illness (strep throat or a skin infection such as impetigo)
- Severe illness (necrotizing faciitis, streptococcal toxic shock syndrome)
Created: 1977
Inclus dans les pages suivantes :
- Life
- Cellular (Organismes cellulaires)
- Bacteria
- Firmicutes
- Bacilli
- Lactobacillales
- Streptococcaceae
- Streptococcus (Streptocoque)
- Streptococcus pyogenes
Cette image ne figure dans aucune collection.
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- Public Health Image Library
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