Jonathan, Another question somebody asked me earlier and may be relevant for those who can't take GcMAF for whatever reason. Dr R. often referred to probiotics in yogurt as potentially capable of naturally producing GcMAF. Question: for anybody with ME, what would be his best bet in terms of type of probiotics in order to get some of the immune benefits that can be obtained from GcMAF? And finally, how does macrophage stimulation from beta glucans differ or compare to GcMAF, can it be an alternative? Many thanks.