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.
In either case, DNA is only part of the evidence. A lack of DNA match. does not necessarily mean that the suspect is innocent, and a DNA match alone. does not prove that the suspect committed the crime. Most crimes are, in fact, prosecuted without DNA evidence, and even when there is a DNA match, other.