Jesus Christ, it’s leukaemia or leukemia depending on where you are from. You are likely getting this confused with chemotherapy, which is a form of cancer treatment. The fact that the comment has 26 likes and no one corrected you is worrying. This is basic stuff.
@@Waawaaweewaa_ or maybe they're not native English speakers, as announced by the name "Jose Maria"... It's leucemia in Spanish, leucémie in French. I'm sorry not everyone can speak your native language as well as you can; will you be okay?