Incredible Hulk (1999 series) #106

The World War Hulk saga starts here.

Iron Man took She-Hulk's powers away in SHu#18. Julio neglected to mention that Amadeus Cho slips Jennifer Walters an antidote to the nanobots, which turns her back into She-Hulk to fight Doc Samson. He planned every bit of this meeting, and manipulated the players into their roles. He could have given her a permanent cure, but he only gave her a temporary one because he didn't know whose side she'd be on. At the end of this issue She-Hulk reverts to Jen. In World War Hulk Prologue: World Breaker Jen will meet Samson again, specifically referring back to this issue and saying says she's stuck being human. In Avengers: Initiative #4 Dr Strange will recruit her for the war against the Hulk, and Iron Man will say he's restored her powers. He'll let her keep them for the duration of WWH. She'll eventually sue him to get them back permanently in SHu#20.