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Immunofluorescence pattern of SS-A and SS-B antibodies. Produced using serum from a patient on HEp-20-10 cells with a FITC conjugate. Anti-SSA autoantibodies (anti–Sjögren's-syndrome-related antigen A autoantibodies, also called anti-Ro, or similar names including anti-SSA/Ro, anti-Ro/SSA, anti–SS-A/Ro, and anti-Ro/SS-A) are a type of anti-nuclear autoantibodies that are associated with ...
20823 Ensembl ENSG00000138385 ENSMUSG00000068882 UniProt P05455 P32067 RefSeq (mRNA) NM_003142 NM_001294145 NM_001110145 NM_009278 NM_001355265 RefSeq (protein) NP_001281074 NP_003133 NP_001103615 NP_033304 NP_001342194 Location (UCSC) Chr 2: 169.79 – 169.81 Mb Chr 2: 69.69 – 69.7 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Sjögren syndrome type B antigen (SS-B) also known ...
Blood tests can be done to determine if a patient has high levels of antibodies that are indicative of the condition, such as antinuclear antibody (ANA) and rheumatoid factor (because Sjögren's syndrome frequently occurs secondary to rheumatoid arthritis), which are associated with autoimmune diseases.
Antibodies are produced by B cells in two ways: (i) randomly, and (ii) in response to a foreign protein or substance within the body. Initially, one B cell produces one specific kind of antibody. In either case, the B cell is allowed to proliferate or is killed off through a process called clonal deletion. Normally, the immune system is able to ...
An extractable nuclear antigen panel, or an ENA panel, tests for presence of autoantibodies in the blood that react with proteins in the cell nucleus. It is usually done as a follow-up to a positive antinuclear antibody test and when one is showing symptoms of an autoimmune disorder. The ANA tests for the presence or absence of autoantibodies ...
The antigens are either from cell extracts or recombinant. Blood serum is incubated in the wells of the plate and is washed out. If antibodies that bind to antigen are present then they will remain after washing. A secondary anti-human antibody conjugated to an enzyme such as horseradish peroxidase is added. The enzyme reaction will produce a ...
If the red cells then agglutinate, the test is positive, a visual indication that antibodies or complement proteins are bound to the surface of red blood cells and may be causing destruction of those cells. The indirect Coombs test is used in prenatal testing of pregnant women and in testing prior to a blood transfusion. The test detects ...
Anti-K is the next most common immune red cell antibody after those in the ABO and Rh system. Anti-K typically presents as IgG class alloantibody. Individuals lacking a specific Kell antigen may develop antibodies against Kell antigens when transfused with blood containing that antigen. This is particularly true for the "K" antigen which shows ...