Last spark from the ashes

The doctor in question shakes his head but washes his hands with sterilizing gel and pulls on some thin disposable gloves. "What have you Guardians been up to?"

"Come on, doc," Blaze chuckles. "Verity's still not the strangest thing you've seen around here."

He doesn't deign to dispute that, but he's still getting to grips with the situation. "It's just the implications-" No, he's a professional, his work comes first. "All right. Let's see. Most infectious diseases from that time are no longer active in the local population, but we have quite good records- and open wide, please." He takes throat and cheek swabs, sealing each into clear slides, to be slotted into an array hooked up to the computer. "And a rather broad selection of immunological profiles with origins in different time periods, of course."

The blood he takes after swabbing her arm, neat and painless.