Abstract: A mAb or Taxilin alpha-binding fragment thereof (“Taxilin alpha”) having an antibody heavy chain; an antibody light chain, an antibody comprising a heavy chain and/or an antibody. A kit of the same monoclonal antibody or Taxilin alpha-binding fragment thereof. A method of making the Taxilin alpha. The making method requires separating the Taxilin alpha from a cell culture that expresses the Taxilin alpha.

Abstract: Provided are compositions that contain mammalian cells for use in detecting antibodies. The mammalian cells are modified such that they do not contain LEDGF protein. The mammalian cells are immobilized on a solid substrate. The compositions can also contain mammalian cells that contain the LEDGF protein. Methods for using the cell compositions in diagnostic approaches are included, as are kits for performing diagnostic tests.

Abstract: Provided are compositions that contain mammalian cells for use in detecting antibodies. The mammalian cells are modified such that they do not contain LEDGF protein. The mammalian cells are immobilized on a solid substrate. The compositions can also contain mammalian cells that contain the LEDGF protein. Methods for using the cell compositions in diagnostic approaches are included, as are kits for performing diagnostic tests.

Abstract: A method for diagnosis or aiding in the diagnosis of Sjögren's Syndrome (SS). The diagnosis method requires testing a sample obtained or derived from a subject for an amount of Taxilin alpha, wherein determining an amount of Taxilin alpha that is more than a reference comprises a diagnosis or aids in a diagnosis that the individual has SS, and wherein determining an amount of Taxilin alpha that is the same as or less than a reference indicates the individual does not have SS. A mAb or Taxilin alpha-binding fragment thereof (“Taxilin alpha”) having an antibody heavy chain; an antibody light chain, an antibody comprising a heavy chain and/or an antibody. A kit of the same monoclonal antibody or Taxilin alpha-binding fragment thereof. A method of making the Taxilin alpha. The making method requires separating the Taxilin alpha from a cell culture that expresses the Taxilin alpha.

Abstract: Provided are compositions that contain mammalian cells for use in detecting antibodies. The mammalian cells are modified such that they do not contain LEDGF protein. The mammalian cells are immobilized on a solid substrate. The compositions can also contain mammalian cells that contain the LEDGF protein. Methods for using the cell compositions in diagnostic approaches are included, as are kits for performing diagnostic tests.

Abstract: A testing device has a base and multiple strips connected to the base. Multiple antigens are placed on each strip. The testing device or strips may be affixed to a sheet under a shield. Fluid can be applied to the testing device or the strips. The testing device can be used for biochemical testing, such as line immunoassay (LIA) testing.