Rocephin is part of a class of drugs called cephalosporins. It prevents bacteria's ability to make and maintain their cell wall. Without a cell wall, bacteria are vulnerable and ultimately perish.
Criminalistics is one of many divisions in the field of forensic science. Forensic science includes forensic pathology, odontology, entomology, engineering, criminology, and other disciplines. All of these are specialized sections in forensic science.
The textbook used for the course (Saferstein, R. Criminalistics; An Introduction to Forensic Science, 5th Ed., Prentice-Hall, Inc., NY, 1994) was supplemented by handouts based on the forensic and analytical chemistry literature.