Quote Originally Posted by TheAbominatrix
They didnt seal her in the reactor. Gast found her remains and the ShinRa sealed her in the reactor.

Sephiroth was injected with Jenova cells in the womb, Cloud was injected as an adult.
yeah hojo injected Cloud and Zack after the nilbeheim incident. Zack did not suffer from side effects as he was a soldier hence already treated with mako (pure life stream energy). cloud on the other hand was a normal shinra soldier, not injected with anything and when injected with jenova cells, suffered the side effects...