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Chromobacterium violaceum
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Chromobacterium violaceum

Chromobacterium violaceum produces a number of natural antibiotics. One of them is aztreonam a monobactam antibiotic that is active against gram-negative aerobic bacteria including Pseudomonas aeruginosa. It is marketed as Azactam.
Text: Wikipedia

Original image: exploringtheinvisible.com
Microscopy:
Gram-negative coccobacilli
 

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