Why are pus cells found in stool? A: Pus cells are commonly found in healthy stool, and they help to ease the passage of stool, according to About Health. However, these pus cells are not visible to the human eye. If pus, or mucus, is visible in the stool, this can indicate the presence of a disease or condition. Continue Reading.
DNA evidence is analyzed using the polymerase chain reaction (PCR) method, which allows for very small samples to be tested and identified. Once the sample is tested, it may be cross-referenced with DNA profiles already in a database or with genetic data provided by a suspect.
By basic definition, evidence is proof supporting a theory. It is the smoking gun and bullet taken from the crime scene. In other words, the gun and bullet (evidence) support the victim's death by gunshot wound (theory). Consider, however, the definition of theory -- a fact-based explanation. This means the victim's death by gunshot wound is a theory ascertained by reviewing many variables, one of which is evidence.