Abstract: Conjugates (I), useful for pig feeds, include saccharidic chains X(Fuc?2)Gal?k(Y)TV (II) covalently grafted on a linear protein W, wherein: X is absent, or is Gal?3 or GalNAc?3 and when X is absent, then Y is absent; Y is absent or is Fuc?2 or Fuc?4; T is absent or is ZNAc?3; wherein Z is Glc or Gal; and ? is ? or ?; V is absent or is a mono, or an oligosaccharide; n is an integer equal to 8 or more, k is 3 or 4, and wherein the covalent grafting occurs either between V and the linear protein W, when V is present, or between T and the linear protein W, when T is present and V is absent, or between Gal?k and the linear protein W, when both T and V are absent; and wherein the saccharidic unit covalently bonded to the linear protein may be open and acyclic.

Abstract: The present invention provides a substrate for purifying a biological liquid comprising a solid phase onto which molecules of at least one oligosaccharide that is capable of binding to one or more antibodies are grafted by covalent bonding, said solid phase carrying free aldehyde functions —CHO, a method of producing such a substrate, the use of such a substrate to stabilize the antibody/oligosaccharide bond, as well as a method of purifying a biological liquid in which the biological liquid is brought into contact with at least one substrate of the invention, in a manner such as to obtain the capture of antibodies present in said biological liquid by binding with at least certain of the molecules of oligosaccharide(s) grafted onto the solid phase.

Abstract: The present invention provides a substrate for purifying a biological liquid comprising a solid phase onto which molecules of at least one oligosaccharide that is capable of binding to one or more antibodies are grafted by covalent bonding, said solid phase carrying free aldehyde functions —CHO, a method of producing such a substrate, the use of such a substrate to stabilize the antibody/oligosaccharide bond, as well as a method of purifying a biological liquid in which the biological liquid is brought into contact with at least one substrate of the invention, in a manner such as to obtain the capture of antibodies present in said biological liquid by binding with at least certain of the molecules of oligosaccharide(s) grafted onto the solid phase.

Abstract: The present invention relates to polysaccharides selected from sulphated arabinogalactans, apiogalacturonans and sulphated heteroglycans intended to be used as a drug for the preventive or curative treatment of an influenza virus, as well as to the pharmaceutical compositions including, in particular in combination with at least one pharmaceutically acceptable carrier: either an extract of Codium fragile, including sulphated arabinogalactans, or an extract of Zostera marina or Lemna minor, including apiogalacturonans, or an extract of Caulerpa racemosa, including sulphated heteroglycans.