Process for preparing polynucleotides

摘要

This invention relates to a process of preparation of nucleotide polymers wherein a lysate of a bacterial culture is passed successively through three columns (ion exchange resin, hydrophobic resin and molecular sieve), whereby there is obtained a substantially pure polynucleotidephosphorylase solution. Polymerization of this agent leads to non toxic and non pyrogen products. This invention relates also to products thus obtained and to therapeutic compositions containing the same.