Polymerase chain reaction, or PCR, is a laboratory technique used to make multiple copies of a segment of DNA. PCR is very precise and can be used to amplify, or copy, a specific DNA target from a ...

Figure 1: Schematic diagram of the PCR–mediated recombination strategy used in constructing HIV–1 chimeric infectious clones. The 10–kb, PCR–amplified fragment was detected by gel ...