Abstract: The subject the present invention is a method of producing a pharmacologically stable form of purified and lyophilised bacteriophage preparations of increased stability and antibacterial activity, characterized in that phages produced from a bacterial lysate, for example by ultrafiltration on ultrafiltration membranes, containing a high molecular weight preparation of purified phages is stabilised most preferably with a probiotic extract in the presence or absence of neutral salts and/or organic solvents, lyophilised, characterised via HPLC chromatography, by SDS-PAGE, and bacterial lysis biological assays, and then stored under a vacuum, where the active lyophilisate is destined for phage therapy of infections and tumors.

Abstract: The subject the present invention is a method of producing affinity beds with bacterial lipopolysaccharide molecules bound to them in a non-covalent and stable fashion. The bed produced according to the present invention may be used in affinity chromatography for the purification of antibodies against lipopolysaccharides. It is particularly useful in the purification of antibodies against the labile epitopes of lipopolysaccharides, which degrade in heretofore used methods of covalent bonding of the lipopolysaccharide molecules to the solid phase.