Toxicology is the scientific study of poisons and how they affect living tissue.
Forensic toxicology is carried out by pathologists to try to establish the cause of death during post-mortems. Traces of the substance were found in the bodies of several of these women. Without it there would be no case,' she added. Toxicology was a 'new science' which was 'untested by proven scientific methods'. Julie Evans, the forensic scientist who analysed the levels of morphine found in some of the victims' bodies, submitted evidence to the court.