Interesting, thanks for posting.
They were testing estriol (pregnancy related hormone) to see if it was why pregnancy seem to cause MS to remit.
http://www.neurologyreviews.com/nov02/nr_nov02_estriol.html
I have MS and never felt better than when I was pregnant.
On the Road With Ann Romney
Candidate's Wife May Have MS, but She's 'Totally Onboard' With Husband's White House Run..
http://abcnews.go.com/GMA/story?id=2874819&page=1&CMP=OTC-RSSFeeds0312