I agree with SD, think of what you eat before these seem to come out, it has to be something.
Also, I dont think the immune system is able to target them, they are too big and covered in biofilm which the immune system and many drugs do not penetrate. Natural will be the way to go to eat through those, IE Sea Salt or grapefruit seed extract or something powerful, salt is best IMHO it dries up slimes and mucous and also kills, and garlic eats through it as well in large enough quantities.