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 violent crime - a crime in which the individual who committed the crime presented a serious risk of injury to another individual. For example, a crime in which the individual used a gun or a weapon would be considered a violent felony.