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.
What is the Evidence on Using DNA in Police Investigations? Using DNA in police investigations is listed under âWhat works?â on our Review of the Research Evidence. In the five sites (Orange County and Los Angeles, CA; Topeka, KS; Denver, CO; and Phoenix, AZ) in the Roman et al. study, rapid DNA testing led to higher rates of suspect identification and suspect arrest.