"I'm an allogeneic donor--a perfect sibling match. When Kate needs leukocytes or stem cells or bone marrow to fool her body into thinking it's healthy, I'm the one who provides them. Nearly every time Kate's hospitalized, I wind up there too." Anna's chapter, p. 13

"They don't really pay attention to me, except when they need my blood or something. I wouldn't even be alive, if it wasn't for Kate being sick." Campbell's chapter p. 33

"'For God's sake, Anna,' my mother says. 'Do you even realize what the consequences would be?' My throat closes like the shutter of a camera, so that any air or excuses must move through a tunnel as thin as a pin. I'm invisible, I think, and realize too late I have spoken out loud. My mother moves so fast I do not even see it coming. But she slaps my face hard...