Detection and visualisation of nucleic acids is integral to genome ana
lyses. Exponential amplification procedures have provided the means fo
r the manipulation of nucleic acid sequences, which were otherwise ina
ccessible. We describe the development and application of a universal
method for the labelling of any PCR product using a single end-labelle
d primer. Amplification was performed in a single reaction with the re
sulting amplicon labelled to a high specific activity. The method was
adapted to a wide range of PCRs and significantly reduced the expense
of such analyses.