Originally Posted by jekyl_hyde
Shhhh.... don't go that deep kael. Do you want KYF writing his dissertations about his theories and how they pertain to Japanese history and mythos?
But back to the edo tensai topic... We now have a pretty good idea of where Orochimaru got DNA from Hashi. But where in the hell did he get it from Tobi?
I suspect he got those from medical records and samples collected during Tobi's reign as hokage. Tobi probably like all ninjas went through medical services and thus a samples of his blood and tissue were kept on record for further research and study. Kabuto being a medic ninja was able to get access to these samples thus allowing him all the needed material for an edo tensei.