Hello, my name is Charles Xavier and in my world I am the headmaster of a school for young mutants who have developed extraordinary powers.
I am also a geneticist, and my research is in genetic mutation.
I am asking if there are any of you who would be willing to share a small sample of your blood with me in order to further my research. Back home I do not have such a fantastic mix of people with such different abilities and I think it could certainly help me to understand a great deal.
This is entirely voluntary, and if you are uncomfortable with the prospect then you need not volunteer.