PEP is intended for rare, one-time exposures -- not for repeated use. For people who are exposed to HIV on a regular basis, a more controversial approach is being studied: the use of HIV meds to prevent infection before exposure. Called PrEP, for pre-exposure prophylaxis, it is based on the common practice of using antiretrovirals to prevent HIV transmission in pregnancy.
Forensic methods to identify someone. have evolved from analyzing a personâs actual fingerprints (looking at the arches and. whorls in the skin of the fingertips) to analyzing genetic fingerprints. DNA fingerprinting. also is called DNA profiling or DNA typing. Although human DNA is 99% to 99.9%.
In general, the purpose of collecting fingerprints is to identify an individual. This person may be the suspect, a victim, or a witness. There are three types of fingerprints that can be found: latent, patent, and plastic. Latent fingerprints are made of the sweat and oil on the skinâs surface.This type of fingerprint is invisible to the naked eye and requires additional processing in order to be seen.orensic scientists have used fingerprints in criminal investigations as a means of identification for centuries. Fingerprint identification is one of the most important criminal investigation tools due to two features: their persistence and their uniqueness. A personâs fingerprints do not change over time.