Of course Mark would ask why he couldn't be included in those who could be cured. It was a fair question, after all, if one person could be cured, why not him? Too bad things weren't that simple. Not for Roger, at least.
"The guy was also dying of cancer. Had a bone marrow transplant. The bone was from a region that's apparently resistant to HIV. The surgery is dangerous and not guaranteed to work. And it's expensive."
That didn't mean that doctor's couldn't study the bone chemistry and figure out a way to replicate it, but Roger wasn't really thinking about that. Not to mention it would obviously take time, probably more time than he had left even with the advancements in medicines. But then Mark was asking about what happened back home and that gave Roger a moment pause.
"Not sure. I mean, it would be hard not to notice Maureen missing..."
Because seriously, Maureen not being around would definitely be noticeable. She was loud and obnoxious.