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labpracticalstudy1111111 - Selective and Differential...

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TSA MAC MSA PEA EMB BloodAgar Tryptic Soy Agar MacConkey Agar Mannitol Salt Agar Phenylethyl Alcohol Agar Eosin Methylene Blue Agar Blood Agar Many organisms Enterobacteriaceae S. Aureus Staphylococci and streptococci Fecal Coliforms N/A Inhibits gram positive Halophiles can grow, but only pathogenic cocci turn yellow Inhibits gram negative. Used often for specimens thought to contain E. Coli Inhibits gram positive Large golden yellow colonies for S. Aureus Indicates lactose fermentation. Indicates mannitol fermentation N/A Indicates lactose or sucrose ferm. Small white colonies for S. Epidermidis Colonies Turn red + Agar Turns yellow + Growth = gram+ Turns green + Nonselective and nondifferential
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Unformatted text preview: Selective and Differential Selective and Differential Selective Selective and Differential Differential Selective Agents: Crystal Violet and bile salts Selective Agents: Salt - NaCl Selective Agents: Phenylethyl Alcohol Selective Agents: Peptone, Lactose, Sucrose, Dye Differential Agents: Lactose and Neutral Red Differential Agents: Mannitol and Phenol Red Differential Agents: Lactose, Sucrose and Methylene Blue S. Aureus Coagulase positive Large yellowish colonies Salt Tolerant Enzyme Catalase S.Epidermidis Coagulase negative Small white colonies Salt Tolerant Enzyme Catalase Agranulocytes Lack cytoplasmic granuoles....
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