TY - RPRT TI - Polyribonucleotides containing a thiophosphate backbone. AU - F Eckstein AU - H Gindl PY - 1969 DO - 10.1016/0014-5793(69)80037-2 UR - https://pubmed.ncbi.nlm.nih.gov/11946329/ ID - 11946329 ER -