TY - RPRT TI - Polyribonucleotides containing a phosphorothioate backbone. AU - F Eckstein AU - H Gindl PY - 1970 DO - 10.1111/j.1432-1033.1970.tb00961.x UR - https://pubmed.ncbi.nlm.nih.gov/5444162/ ID - 5444162 ER -