FWIW the latest double blind study, results to be released later this year, uses 7500 eggs per dose rather than the 2500 that has been standard for years.
www.science20.com/karin_hehenberger/pig_whipworm_eggs_natural_approach_crohns_disease-118827It will be interesting to see if this makes a difference. years back I tried TSO and got no benefit at 2500/2 weeks but got some mild dampening of symptoms at 2500/week i e double dose, which was still only 2/3 of what this latest study is using. (incidentalky on human hookworm and human whipworm I got no benefit and all, only got worse symptoms). Unless this stuff is covered by insurance though it is vitually worthless to all but the very wealthy as a long term treatment.