"A Clue to Rheumatoid Arthritis"

Yeesh. Are there any known endogenous antigens that mimic bacterial infection? And that are *already* known to be involved in Rheumatoid Arthritis? Beuller... Beuller...

Link via AAAS: Keyword search for query

Here's the clue:

"Unsaturated aldehyde, 4-hydroxynonenal (HNE) alters the structural integrity of HSA with consequences in the immuno-pathology of rheumatoid arthritis"