Pantry Sites Near You. Allenport Food Pantry â. Allenport Fire Hall, 1850 Main St., Allenport, Pa. 15412. Distribution: Third Wednesday of the month, 8:30 â 10 a.m. Avella Food Pantry â.
Human Leukocyte Antigen (HLA) B27 (subtypes B*2701-2759) is a class I surface antigen encoded by the B locus in the major histocompatibility complex (MHC) on chromosome 6 and presents antigenic peptides (derived from self and non-self antigens) to T cells.or example, while 90% of people with ankylosing spondylitis (AS) are HLA-B27 positive, only a fraction of people with HLA-B27 ever develop AS. Individuals who are HLA-B27 positive are more likely to experience early onset AS than HLA-B27 negative individuals.
Although most HLAs protect the body from harm, HLA-B27 is a specific type of protein that contributes to immune system dysfunction. The presence of HLA-B27 on your white blood cells can cause your immune system to attack the healthy cells that contain it.When this occurs, it can result in an autoimmune disease, such as juvenile rheumatoid arthritis.or patients with specific symptoms, the HLA-B27 test may be used in conjunction with other blood tests to confirm the diagnosis of an autoimmune disease. Symptoms that might prompt a doctor to order the test include: 1  joint pain.