He can understand the curiosity, given that he's found himself a scientist that apparently deals in the very same area that made Steve the supersoldier he is today. If anything, he'd just expect Mordin to be knowledgeable about it already, though that's perhaps just an unfair assumption.

"Professor." The nice to meet you should be implied in the way he swiftly leans his head, offering something close to a smile. His tone and demeanor are pleasant enough for it. "I'll admit I don't know all that much about it, but I'd be happy to tell you whatever I can."