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what is the difference b/w the procedure of a TSI vs Urease test?

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Biology

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1

what is the difference b/w the procedure of a TSI vs Urease test?

TSI: stab the butt and zigzag the slant Urease: just zigzag the slant

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2

what is the difference b/w aerococcus and lactobacillus?

Aerococcus = GPC Lactobacillus = GPR

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3

TSI, Urease, and LIA reactions for salmonella

TSI: K/A, H2s+, G LIA: K/K, H2S+ (purple slant, purple butt, blackening) Urease: yellow (negative)

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4

TSI, Urease, and LIA reactions for Shigella

TSI: K/A LIA: K/A (purple slant/yellow butt) Urease: yellow (negative)

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5

TSI, Urease, and LIA reactions for the Proteus spp

TSI: K/A, H2s+, G LIA: R/A (vulgaris) or R/R (mirabilis) {R=red} Urease: pink (positive)

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6

TSI, Urease, and LIA reactions for E. coli

TSI: A/A, G or K/A, G LIA: K/K (purple slant/purple butt) or K/N (purple slant/neutral butt) Urease: yellow (negative)

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7

colony morphology of Proteus

swarming motility, smooth, pale or colorless (NLF) colonies.

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8

colony morphology of pseudomonas

large, opaque, flat colonies with irregular margins and distinctively fruity odour colonies (grape)

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9

what biochemical test/result identifies pseudomonas

produces non-fluorescent, blue-green, water soluble, diffusible pigment called pyocyanin

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10

when is a urine culture acceptable? when is it contaminated?

contaminated: >3 organisms growing and if the ratio of the organisms is not equal (one is predominant over than the other)

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