Dot and Slot Hybridization of Purified RNA

Dot blotting and slot blotting are techniques for immobilizing several preparations of nucleic acids on the same solid support, usually a charged nylon membrane. The concentrations of the target sequence of interest can be estimated by hybridizing the immobilized samples to an appropriate probe. The amounts of target sequence are estimated by comparing the intensity of signals emitted by dots containing the test samples with standards containing known concentrations of the target sequence. This protocol describes the blotting and subsequent hybridization of RNA that has been purified from cells or tissues.