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 fingerprinting or DNA profiling, any of several similar techniques for analyzing and comparing DNA from separate sources, used especially in law enforcement to identify suspects from hair, blood, semen, or other biological materials found at the scene of a violent crime.