http://www.ncbi.nlm.nih.gov/pubmed/10232397 Parasitter kan trigge aktivering av autoimmunitet.

http://www.ncbi.nlm.nih.gov/pubmed/9821323 En infeksjon kan starte en autoimmun reaksjon i kroppen

http://www.ncbi.nlm.nih.gov/pubmed/8674143

http://www.ncbi.nlm.nih.gov/pubmed/17635799

http://www.sciencedaily.com/releases...0202080534.htm
In a study reported in this month's edition of the journal Nature Medicine, the researchers show clearly that immune system cells which fight bacteria can also attack normal cells carrying a specific mimic molecule -- one that closely resembles a bacterial protein.
Further, they show that as long as there's been a previous bacterial infection, immune cells can attack "innocent bystander" cells -- body cells that bacteria have never infected. This occurs when the cells are stressed by exposure to irradiation, environmental toxins or the body's stress chemicals.
"We've found this evidence that the immune system can be fooled," says Mark Soloski, Ph.D, who led the research team, "and it suggests subtle changes that could underlie many autoimmune diseases." The study also offers a starting place for scientists to investigate environmental or genetic triggers to autoimmune diseases.
The team focused on infections by Salmonella, bacteria well known for food poisoning but also long thought to trigger arthritis in some people. "As many as 10 percent of those who get Salmonella develop a Œreactive' kind of arthritis which lasts a few weeks," says Soloski. "But a smaller, significant number of those patients get a severe, debilitating type of arthritis that's long-lasting."