Rapid selection of nonhotspot mutants among hisD+ revertants of Salmonella typhimurium TA98 in Ames test by peptide nucleic acid (PNA)-mediated PCR clamping.

Rapid selection of nonhotspot mutants among hisD+ revertants of Salmonella typhimurium TA98 in Ames test by peptide nucleic acid (PNA)-mediated PCR clamping.