All of them. They are all prepared to take it in whatever form the GB say is OK.
I dunno... my mother, when filling out a blood card (this was a few years ago, when we actually spoke of JW matters still), refused to check the boxes that allowed for certain fractions. I reminded her that it was okay to accept these fractions according to the WTS, and she should check the boxes, but she said something to the effect of, 'it's best not to test the boundaries, but to be cautious when giving doctors permission in regards to blood'.
So even when they allowed fractions, she wouldn't bend on the previous application of 'no blood, no how, no way'