More detail and supporting information is in the body of this article. 1  Leg pain refers to any kind of pain that occurs between the heels and the pelvis. 2  Many causes of leg pain are obvious, such as injury after an accident.  Leg pain can have less obvious causes, such as peripheral artery disease.
Cardiopulmonary resuscitation (CPR) is an emergency procedure that is performed on people who are suffering from cardiac arrest. The purpose of CPR is to provide a flow of oxygenated blood to the brain until other procedures can be performed to restore the person's heartbeat and breathing.
The polymerase chain reaction (PCR) is a technology in molecular biology used to amplify a single copy or a few copies of a piece of DNA across several orders of magnitude, generating thousands to millions of copies of a particular DNA sequence. Digital PCR (dPCR) : used to measure the quantity of a target DNA sequence in a DNA sample. 2  The DNA sample is highly diluted so that after running many PCRs in parallel, some of them do not receive a single molecule of the target DNA.