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.
A criminal is a person who has committed a crime, whether that is stealing, assulting another person, raping, committing purgery, or any other crime. Another view: A criminal is someone that, for any reason, has lost contact with his or her own capacity to love and be loved.