Biochemical Differentiation Of Pathogenic Bugs

Front 1

Phe for all

Back 1

NEG

Front 2

VP for all

Back 2

neg

Front 3

TSI of yersinia enterocolitica

mimics:

Back 3

A/A


Alternate of E. coli

Front 4

E. coli TSI common and alternates

Back 4

A/Ag

Alternate: A/A or K/A

Front 5

TSI of Shigella

mimics:

Back 5

K/A

no alternate

mimics E.coli's alternate K/A

Front 6

TSI of Edwardsiella

mimics:

Back 6

K/AH2S (no gas)

mimics Salmonella and C. freundii's alternate

Front 7

TSI of salmonella

mimics:

Back 7

K/AH2S(nogas)

Front 8

TSI of C. freundii

alt

mimics

Back 8

A/AH2S (nogas)

alt: K/AH2S(nogas) mimics Salmonella and Edwardsiella

Front 9

Urea results of Yersinia enterocolitica and C. freundii:

Back 9

0->1+

Front 10

Urea is 0 for what organisms

Back 10

E. coli, Shigella, Edwardsiella, and Salmonella

Front 11

Y. enterocolitica motility:

Back 11

neg at 37

pos at 22

Front 12

E. coli motility

Back 12

+

Front 13

Motility for Shigella

Back 13

-

Front 14

Which organisms are motility +?

Back 14

E. coli, Edwardsiella, Salmonella, C. freundii

Front 15

Which organisms are indole variable?

Back 15

Y. enterocolitica, Shigella

Front 16

which organisms are indole +?

Back 16

E. coli, edwardsiella

Front 17

which organisms are indole neg?

Back 17

salmonella, c. freundii

Front 18

Which organisms are Ornithine pos?

Back 18

Y. enterocolitica, E. coli, Edwardsiella, Salmonella

Front 19

Which organisms are Ornithine Variable?

Back 19

Shigella, C. freundii

Front 20

Which organisms are citrate pos?

Back 20

Salmonella, C. freundii

Front 21

Which organisms are citrate neg?

Back 21

Y.enterocolitica, E.coli, Edwardsiella, Shigella.

YEES

Front 22

WHich organisms are Lysine neg?

Back 22

Y. enterocolitica, Shigella, C. freundii

Front 23

Which organisms are lysine pos?

Back 23

E. coli, Edwardsiella, Salmonella

Front 24

What organism is lac neg?

Back 24

Y. enterocolitica

Front 25

Which organism is lac pos?

Back 25

E. coli

Front 26

Which of both patho and normal organisms are H2S producers?

Back 26

SPEC

Salmonella
Proteus mirabilis/vulgaris
Edwardsiella
Citrobacter freundii

Front 27

good way to know you've got edwardsiella:

Back 27

Edwardsiella is
Indole pos and Citrate neg

whereas

Salmonella and Citrobacter f. are both Indole neg and Citrate pos

Front 28

If lysine is negative and citrate is negative, what should you be thinking?

Back 28

y. enterocolitica or shigella, but not e.coli; they're all citrate neg, but e.coli is lysine pos

Front 29

If H2S is produced the bug can only be:

Back 29

Salmonella
Proteus
Edwardsiella
Citrobacter freundii

Front 30

If Motility is positive the bug is NOT:

Back 30

Klebsiella
Shigella
Yersinia enterocolitica at 37

Front 31

If Indole is Neg and Citrate is Pos:

bug could be..

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Citrobacter freundii
Enterobacter
Salmonella
Serratia

Front 32

If Lysine is deaminated, bug could be:

Back 32

Proteus
Providencia
Morganella

Front 33

Ornithine is NEVER positive for:

Back 33

Klebsiella
Providencia

Front 34

Only bug that is BOTH
indole and citrate positive:

Back 34

Providencia

Front 35

If Indole is Pos and
Citrate is Neg

Back 35

Morganella
Edwardsiella
E. coli

Front 36

Of the pathogenics, only 2 are positive on urea:

Back 36

Y. enterocolitica
C. freundii

Front 37

3-4+ urea:

Back 37

Proteus, Morganella, Providencia

Front 38

Only DNAse positive

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Serratia

differentiates it from Enterobacter

Front 39

Genera with spores

Back 39

bacillus
clostridium