Corynebacterium
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What are the three main pathogens and which is the most significant? | 1) Corynebacterium diptheriae: most significant
2) Corynebacterium jeikeium
3) Rhodococcus equi
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What are the selective media for C. diptheriae and what do the colonies look like? | 1) Cystine-Tellurite Blood Agar: black/gray colonies with garlic odor
2) Modified Tinsdale Agar: black with dark brown halo's
3) Loeffler's: minute gray colonies, granules inside the cells called Babes-Ernst bodies which can be seen with Alberts Stain.
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What test is used to demonstrate that a C. diptheriae organism can produce the exotoxin? | The ELEK test
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What test can measure the degree of immunity to diptheria? | The Schick Test
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What is one way to differentiate C. diptheriae from C. jeikeium biochemically? | C. diptheriae is nitrate positive while C. jeikeium is nitrate negative but pyrazinamidase positive
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Which organism produces a salmon-pink colony on BAP agar? | Rhodococcus eqi
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