Eric Lensherr: Charles Xavier did more for mutants than you will ever know. My single greatest regret is that he had to die for our dream to live.
Mutant: [Grows his arms back after Wolverine cuts them off.] Yeah, bring it on!
[Wolverine kicks him between the legs and he collapses to the ground.]
Wolverine: Grow those back.
Prof. Charles Xavier: I don't have to be psychic to see that something's bothering you.
Dr. Hank McCoy: Oh, my stars and garters.
Dr. Hank McCoy: Have you even begun to think what a slippery slope you're on?
The President: I have. And I worry about how democracy survives when one man can move cities with his mind.
Dr. Hank McCoy: As do I.
Juggernaut: Don't you know who I am? I'm the Juggernaut, bitch!
Chosen answer: Both Wolverine and Mystique's mutations cause them to age slowly; effectively the normal human body deterioration is slowed for them, giving them a younger physical age than their actual chronological age. If that mutation was removed, then the factor that slowed their ageing would no longer function, but they wouldn't abruptly "catch up" with their actual age, they would simply possess a body at their current physical age which would age as a normal human after that point. As for the adamantium lacing Logan's bones, were his healing factor removed, he might well swiftly suffer extreme levels of toxic shock, which would likely prove fatal.
Tailkinker ★