Subject: In how many ways can the woman's immune system produce antisperm antibodies

It is known that the woman's immune system can sometimes produce antisperm 
antibodies when the sperm is deposited in her genital tract, because it is 
recognized as an alloantigen. Can the same happen if the sperm can be 
found and recognized by the immune system in other tracts of the female 
body, e.g. gastrointestinal tract? What I mainly ask is if their is any 
possibility for the woman to produce alloantibodies through the 
gastrointestinal tract and if this is correct, can the same happen with 
other antigens, too - for example food antigens?

Re: In how many ways can the woman's immune system produce antisperm antibodies