method of purifying activity with such purifiees interferon preparations thus obtained and their use

摘要

The invention relates to a process for the purification of preparations having an interferon type-activity which comprises contacting the crude preparations with an adsorbent comprising as ligand a chromophore blue, equilibrated with an aqueous buffer whose concentration in salts is isomolar or hypomolar as compared with that of blood, and separating the fixed products having an interferon activity by using an aqueous buffer whose concentration in salts is hypermolar as compared with that of blood.