[His hand flinches away as he sees that reaction. Ratchet instead lifts that hand to rub at his neck cables, shrugging his shoulders.]

Worried more than anything. [He lowers his hand as he feels another dribble of energon escape the corner of his mouth. He wipes it off and looks at its discoloration.]

That Ratchet was curious about Synthen before. I refused to tell him anything about it. But now that he's seen it in action, there's no telling what he'll do next.