Xenomedicine

There had been people studying xenomedicine in the same class as the two of them who turned out not to have been particularly well fitted for it. Well, he thought, better they should find out in training, rather than in practicing on a patient.

You seem to be the first person in the history of xenomedicine who's simply been bitten by a yagghorth instead of disassembled into component pieces.”

“I understand, Tobin. Being joined is a great responsibility.” Dax stared, flushing with panic. “You . . . you know?” “Don't look so surprised. I'm an expert in xenomedicine and I've been around the quadrant once or twice.