Abstract: The present invention provides methods of diagnosing autoimmune disorders selected from the group consisting of Sjögren's Syndrome and lupus in a subject based on detecting a difference between the subject and normal individuals in the levels of individual antibody classes and/or subclasses that are specific for Tf-like antigens. The present invention also provide methods for treating autoimmune disorders selected from the group consisting of Sjögren's Syndrome and lupus in a subject comprising administering to a subject in need thereof a Tf-like antigen or an antibody thereto.

Abstract: The invention provides a mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is sulfur and at least 2 heteroatoms are not the same. The invention also provides a multidentate mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms of which at least one is a sulfur atom. The ligand may also contain, in addition to sulfur, at least one nitrogen or phosphorous heteroatom.

Abstract: The invention provides a mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is nitrogen and at least two heteroatoms are not the same. The invention also provides a multidentate mixed heroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms. At least one heteroatom may be nitrogen and at least 2 heteroatoms may not be the same.