Celaeno
You will not evade me, Henriette Frans <ch.frans@chello.nl>:

What else is a hobby but an interest thing?:-)

You have the faintest idea how many hobbies I'd have if I rated everything that interested me as a hobby? :)

But receiving the wrong bloodtype in a transfusion is history, surely?

Yes and no. I've heard that they mix a little donated blood with the recipient's before performing a transfer, just to make sure. And even though bloodtype 0 is considered a universal donor and that 'everyone can receive it', that is only the case if the 0 blood doesn't contain many A and B antibodies. Then you have to take into account all the other different blood type classification - the rarest blood type ever was shared by two siblings, and the brother regularly went to the blood bank to put some away in case something happened to him.

I had blood transfusions when I was a baby, and for many years my mother thought that because of that, my blood wasn't 'my own'. I had to explain to her that blood is completely renewed from the marrow in a matter of weeks :)