Rheumatoid arthritis (RA) is an immune-mediated inflammatory (autoimmune) rheumatic disease of unknown etiology. which is characterized by chronic erosive arthritis (synovitis) and systemic damage of internal organs and leads to early disability and shorter life expectancy in patients. Much attention is paid to studying the role of interleukin 6 (IL6) in the spectrum of proinflammator... https://danddcollectiblers.shop/product-category/crossbody/