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Salmonella, Shigella, Yersinia, and Serratia are all gram-negative facultatively anaerobic rods.
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What do abnormal stool cultures show?
Shigella, Salmonella, Campylobacter, and Yersinia. Clostridium difficile produces a toxin that can cause severe diarrhea.
How can you differentiate Serratia marcescens and Shigella flexneri as an unknown?
A simple test you can perform is the Citrate test, Serratia marcensens is Citrate positive while Shigella flexneriis citrate negative.Also Serratia Marcensens is motile and Shigella flexneri is non motile if you have already done a Hydrogen Sulfide test you would have been able to already determine between the two.Also Serratia marcensens is VP positive while Shigella flexneri is negative.Serratia marcensens is lipase positive and Shigella flexneri is lipase negativeAnother distinguishing characteristic is that Serratia marcensens grows a distinct red color pigmentation the Shigella flexneri does not have.(These are all according to Bergeys Manual of Systematic bacteriology)
What bacteria are non-lactose ferment er?
Mnemonic: KEE Klebsiella pneumoniae Enterobacter cloacae E. coli Shigella sonnei can ferment lactose, but only after prolonged incubation and so it is referred to as a '''''late-lactose fermenter'''''. Vibrio cholerae is also a late lactose fermenter.
What are some enterobacteria?
Enterobacter is a genus of common Gram-negative, facultatively-anaerobic, rod-shaped bacteria of the family Enterobacteriaceae. Several strains of the these bacteria are pathogenic and cause opportunistic infections in immunocompromised (usually hospitalized) hosts. The urinary and respiratory tract are the most common sites of infection.11. http://en.wikipedia.org/wiki/Enterobacter
What is the implicated illness of shigella?
salmonella
What are the most common bactyerial infections of the digestive tract?
The most common bacterial infections of the digestive tract are caused by Shigella, Salmonella, Campylobacter, and Yersinia. Patients taking certain antibiotics may be susceptible to infection with Clostridium difficile
What are shigella organisms?
Salmonella, Shigella Organisms that ferment lactose display "nucleated colonies" - colonies with dark centers.
What is the colour of klebsiella on salmonella-shigella agar?
Its color is red.
How does samonella and shigella appear on S.S agar?
Shigella and the majority of salmonellae Clear, colorless, transparent Salmonella enteriditis ATCC 13076 Colorless with black center Salmonella typhi ATCC 6539 Colorless with black center Salmonella typhimurium ATCC 14028 Colorless with black center
Biochemical tests for Salmonella and Shigella?
urease - negative ONPG - positive Lysine - positive
What are some names of bad microbes?
S. aureus, E. coli, P. auriginosa, Salmonella typhi, Shigella sonnei, Shigella flexneri, Vibrio cholera.
Which bacteria gives dark puple colour on EMB agar medium?
Escherichia coli-Salmonella-Shigella-Enterobacter
