TY - RPRT TI - In vitro selection identifies key determinants for loop-loop interactions: RNA aptamers selective for the TAR RNA element of HIV-1. AU - F Ducongé AU - J J Toulmé PY - 1999 DO - 10.1017/s1355838299991318 UR - https://pubmed.ncbi.nlm.nih.gov/10606271/ ID - 10606271 ER -