[Marty, frowning] There's probably an alternate reality somewhere where that happened. . .and yeah, bet you anything the shit hit the fan.

[Doc nods] Mmmm. . .very hard too.

[Doc's eyes widen as Palmer makes a gesture like he could open himself up like one of those mannequins for kids that show all the internal organs] I -- well, that is useful, but. . .suppose I can always make notes of my observations, at least. [he nods again, more empathetically] I'd prefer not to risk myself either. And I don't think I'd take any samples WITH me. Best place to do this would be the Nexus itself, for any extra protection it could give.

[Marty, shrugging] There IS a clinic around here, but I dunno if you want to go there.