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.
What is PCR? The polymerase chain reaction (PCR) was originally developed in 1983 by the American biochemist Kary Mullis. He was awarded the Nobel Prize in Chemistry in 1993 for his pioneering work. PCR is used in molecular biology to make many copies of (amplify) small sections of DNA or a gene.