Answer:
Chenotherpay uses drugs to kill cancer cells.
Radiation uses high-powered energy beams, such as x-rays or protons, to kill cancer cells.
Hope this is what you were looking for :)
I believe the answer is:
in direct contact with a HIV positive person's body fluids such as blood or semen.
Adoption, and have a serogacy (not sure if that's how you spell it)