Lab__2b_Media___Culture_-_Examining_Results

A what is the difference between touch plates 1 2 and

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a. What is the difference between touch plates 1, 2 and 3? b. Is this what you expected? Question #6: Record and interpret results from nasal swab plates (TSY and Mannitol Salt ). a. Did any of the colonies turn the Mannitol Salt medium yellow? b. What would it mean if they did? Question #7: Record and interpret results from throat swab plate ( Blood agar ). a. Do you see Alpha hemolysis? Beta hemolysis? Gamma hemolysis? b. Which hemolysis pattern is bad news? Question #8: Record and interpret results of environmental samples, for each quadrant 1 – 4 (TSY and MacConkey’s ). a. Are MacConkey colonies pink or colorless? b. What does it mean if they are pink? Images: Arm plate, Mannitol Salt, Blood agar & MacConkey’s, all by T. Port From the Virtual Microbiology Classroom on ScienceProfOnline.com
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When you’re done with your environmental and clinical plates, put them in the discard bin at back of lab. From the Virtual Microbiology Classroom on ScienceProfOnline.com
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Confused? Here are links to fun resources that further explain microbiology media & culture: Media & Culture Laboratory Main Page on the Virtual Microbiology Classroom of Science Prof Online .
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