Polymerase Chain Reaction,which is called PCR for short,is a kind of nucleic acid amplification technology in vitro.Using this technique,reasearchers can produce millions of copies of specific sequences which are selected from complex DNA molecules.The PCR instrument is the instrument which can finish the polymerase chain reaction automatically.At present,PCR technology has been widely applied in life science research,biochemical analysis,clinical diagnosis,drug analysis,forensic identification and ...