When persistent joint pain strikes, the search for answers often leads to a crucial diagnostic tool: the rheumatoid factor test. This relatively quick blood analysis serves as a window into the immune ...

A rheumatoid factor (RF) test detects rheumatoid factor, a type of antibody (proteins that fight off harmful substances) in your blood. RF antibodies sometimes attack healthy cells and tissues, ...

Rheumatoid arthritis is an autoimmune disease which occurs when the immune system creates an unwanted response that targets the body's tissues and organs. Normally, a healthy immune system counts on ...

INTEREST in the pathophysiology of the systemic rheumatic diseases has been revitalized by the discovery of the serum factors that produce the L.E. cell in disseminated lupus erythematosus and the ...

AN impressive body of experimental evidence can be summarized by the statement that graft rejection is initiated by an immunologic process. 1 Similarly, there is evidence that immunologic events may ...