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.
DNA evidence thus uses this scientific evidence in order to provide conclusions for proving a particular case in the trial. It is important to remember, however, that DNA evidence, like much scientific evidence, is ultimately considered to be circumstantial evidence. This means that it does not definitively prove anything the point which needs to be proved within the trial, and instead provides only a strong inference in favor of the point.