NOTE: This medical case study can also be bought in my discounted 5 Medical Case Toxicology Bundle! High-Engagement AP Biology / Forensics Case Study: The Cyanide Collapse (Based on the Chicago Tylenol Murders). A highly recommended resource after completing a unit on Cellular Respiration (Mitochondria, Electron Transport Chain, Aerobic vs. Anaerobic Respiration) Maximizing Student Engagement and Critical Thinking! Bring real-world forensic science and complex biochemistry into your classroo