At the FDA meeting yesterday, Dr Dan Peterson said: "Worldwide the number one immunological marker is low NK function, found abnormal by everyone who looks at it." I've read elsewhere that this is not a consistent finding but seem to remember reading yet elsewhere that it is consistent if you look at certain kinds of studies (big ones? ones using more recent, more sensitive technology? can't remember). I need some evidence on this to take to a consultation with an infectious diseases specialist on Monday. I have a test showing low NK cells. I need a good-quality, preferably recent review or crucial study published in a peer-reviewed science journal. Does anyone have reference to one? Please don't post people's opinions or commentary about NK cells - that would be interesting for another thread, perhaps - please just post about published studies, otherwise I think the thread could easily go off-topic and I need this quickly (I'm so demanding! ).