Thanks for that article, Ian. The placenta has long been considered important with regard to autoimmune diseases because of its " immune privileged" status and the fact that it is not rejected by the mother's body, and I remember writing before, (though I can't find it now), about an old Russian technique of inserting a small fragment of placenta under a flap of skin below the navel as a treatment for many autoimmune diseases. This discovery of a single protein found in placental tissue which is also used by a parasite to hide itself from the immune system sounds really exciting to me.
Bob, that's a great picture! Is it from your passport?