character: Mr. Alex Thompson
topic: The Role of Chromatography in Drug Testing
grade: 11
subject: Chemistry
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character: Dr. Emily Carter
topic: Applications of Chromatography in Forensic Science
grade: 11
subject: Chemistry
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character: Ms. Sarah Johnson
topic: Introduction to Chromatography Techniques
grade: 11
subject: Chemistry
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character: Mr. Paul Edwards
topic: Understanding the Principles of Drug Testing
grade: 11
subject: Chemistry
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