Medical Daily | Enzyme-activating antibodies revealed as marker for most severe form of ... Science Daily (press release) In the study, the antibodies were present -- in 18 percent of 44 fluid samples from one research collection and in 12 percent of another collection of 194 -- but only in people with severe cases of rheumatoid arthritis. Past research shows that those ... Marker For Aggressive Form Of Rheumatoid Arthritis Found |