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What is the purpose of BAP, CHOC, MAC
- BAP: See type of hemolysis
- CHOC: more nutrients
- MAC: selects for gram neg, pink colonies ferment lactose
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What are the common GPC in clusters?
- Staph aureus (ASSUME THIS)
- Coagulase neg staph
- Micrococcus
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Staph vs strep
- Staph: Catalase +
- Strep: Catalase -
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Staph aureus vs CNS
- Both: Catalase +, GPC clusters
- Staph aureus: Coagulase +, staphaurex +, can be beta hemolytic (CNS is neg for all)
- *Note must determine if Staph aureus is resistant using the discs
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Micrococcus
- GPC clusters/TETRADS
- MICRODASE POSITIVE
- Bacitracin (A disc) sensitive for any sized]
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What are the common GPC in pairs and chains?
Enterococcus, Strep, other catalase neg GPC
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Types of strep by hemolysis
- *GPC in pairs/chains
- alpha: pneumo, viridans
- beta: pyogenes ("group A"), agalactiae ("Group B")
- gamma: enterococcus
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