British Scientists Producing Synthetic Blood
Because stem cells multiply indefinitely, it would be possible to enormous quantities, researchers said.
The cells can be made from universal donor embryos - the O-negative type - and can be guaranteed to be free of infections because they have never been inside a human.
The idea of destroying embryos to create stem cells raises ethical issues, but in theory, just one embryo could meet the nation's needs.
Stem cells aside, I think the real issue is this: if synthetic blood is so readily available, how are we going to track the vampire population? I've seen Blade, those bastards are crafty. I suggest we start culling the herd now before it's too late. And speaking of culling -- I'll take care of Edward, you get the rest.
Thanks to phuzzygish, who one made some pretty believable synthetic blood with corn syrup and food coloring.