5'-pnG pnC pnT pnC pnC pnC pnG pnG pnG pnC pnT pnC pnG pnA pnC pnC-3' AIDS-070600 AIDS070600 Anti-TAR peptide nucleic acid oligonucleotide PNA Peptide Nucleic Acid (5'-GCTCCCGGGCTCGACC-3')