User blog comment:I HEART TWILIGHT SAGA/Jasper/@comment-99.26.144.151-20090831033935

"Twilight" page 461:

"What happened to James?" (Bella) "After I pulled him off you, Emmett and Jasper took care of him"(Edward) "I didn't see Emmett and Jasper there." "They had to leave the room...there was a lot of blood."

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You see in the book, Jasper and Emmett weren't in the studio because they couldn't handle Bella's blood. They left them in the studio in the film adaptation to simply make a better movie.