In House, M.D., which actress plays immunologist Allison Cameron?

Jennifer Morrison plays immunologist Allison Cameron in House, M.D.

Cameron is one of Gregory House’s original diagnostic fellows. Her background in immunology and her strong sense of compassion influence the way she approaches patients. She often advocates for humane treatment and ethical choices, even when House favors a more detached or aggressively practical strategy.

Morrison appeared as a main cast member during the early seasons and later returned in a recurring capacity. Cameron’s professional relationships with House, Robert Chase, and Eric Foreman form several continuing storylines. She eventually becomes involved in hospital administration and other departments beyond House’s original team.

Jennifer Morrison later became widely known for roles including Emma Swan in Once Upon a Time. House viewers may confuse her with Lisa Edelstein, who played administrator Lisa Cuddy, or Anne Dudek, who played Amber Volakis. Cameron’s specialty, immunology, is another identifying detail that separates her from those characters.