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39 Cards in this Set

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Phe for all
NEG
VP for all
neg
TSI of yersinia enterocolitica

mimics:
A/A


Alternate of E. coli
E. coli TSI common and alternates
A/Ag

Alternate: A/A or K/A
TSI of Shigella

mimics:
K/A

no alternate

mimics E.coli's alternate K/A
TSI of Edwardsiella

mimics:
K/AH2S (no gas)

mimics Salmonella and C. freundii's alternate
TSI of salmonella

mimics:
K/AH2S(nogas)
TSI of C. freundii

alt

mimics
A/AH2S (nogas)

alt: K/AH2S(nogas) mimics Salmonella and Edwardsiella
Urea results of Yersinia enterocolitica and C. freundii:
0->1+
Urea is 0 for what organisms
E. coli, Shigella, Edwardsiella, and Salmonella
Y. enterocolitica motility:
neg at 37

pos at 22
E. coli motility
+
Motility for Shigella
-
Which organisms are motility +?
E. coli, Edwardsiella, Salmonella, C. freundii
Which organisms are indole variable?
Y. enterocolitica, Shigella
which organisms are indole +?
E. coli, edwardsiella
which organisms are indole neg?
salmonella, c. freundii
Which organisms are Ornithine pos?
Y. enterocolitica, E. coli, Edwardsiella, Salmonella
Which organisms are Ornithine Variable?
Shigella, C. freundii
Which organisms are citrate pos?
Salmonella, C. freundii
Which organisms are citrate neg?
Y.enterocolitica, E.coli, Edwardsiella, Shigella.

YEES
WHich organisms are Lysine neg?
Y. enterocolitica, Shigella, C. freundii
Which organisms are lysine pos?
E. coli, Edwardsiella, Salmonella
What organism is lac neg?
Y. enterocolitica
Which organism is lac pos?
E. coli
Which of both patho and normal organisms are H2S producers?
SPEC

Salmonella
Proteus mirabilis/vulgaris
Edwardsiella
Citrobacter freundii
good way to know you've got edwardsiella:
Edwardsiella is
Indole pos and Citrate neg

whereas

Salmonella and Citrobacter f. are both Indole neg and Citrate pos
If lysine is negative and citrate is negative, what should you be thinking?
y. enterocolitica or shigella, but not e.coli; they're all citrate neg, but e.coli is lysine pos
If H2S is produced the bug can only be:
Salmonella
Proteus
Edwardsiella
Citrobacter freundii
If Motility is positive the bug is NOT:
Klebsiella
Shigella
Yersinia enterocolitica at 37
If Indole is Neg and Citrate is Pos:

bug could be..
Citrobacter freundii
Enterobacter
Salmonella
Serratia
If Lysine is deaminated, bug could be:
Proteus
Providencia
Morganella
Ornithine is NEVER positive for:
Klebsiella
Providencia
Only bug that is BOTH
indole and citrate positive:
Providencia
If Indole is Pos and
Citrate is Neg
Morganella
Edwardsiella
E. coli
Of the pathogenics, only 2 are positive on urea:
Y. enterocolitica
C. freundii
3-4+ urea:
Proteus, Morganella, Providencia
Only DNAse positive
Serratia

differentiates it from Enterobacter
Genera with spores
bacillus
clostridium