Suppose that a bacterium happened to have a protein on its surface. This protein can also be found in the human body. If this bacterium were to then infect a human with an otherwise normal immune system, would his/her immune system attack the person's body, in addition to the bacterium?
The reason I'm asking this is because I have read a book about how, supposedly, the Soviet Union created a bacterium that did just that: they modified Yersinia Pestis to produce myelin which, supposedly, caused multiple sclerosis. The book's author claims that this really happened, but I am skeptical of that claim.