The decision to have surgery also depends on what caused mitral regurgitation. It depends on whether it is caused by: A problem with the anatomy of the valve (primary regurgitation). Another heart problem (secondary regurgitation).
PCR (polymerase chain reaction) is a method to analyze a short sequence of DNA (or RNA) even in samples containing only minute quantities of DNA or RNA. PCR is used to reproduce (amplify) selected sections of DNA or RNA. Previously, amplification of DNA involved cloning the segments of interest into vectors for expression in bacteria, and took weeks. But now, with PCR done in test tubes, it takes only a few hours.
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.