In House M.D., Jennifer Morrison played Dr. Allison Cameron.
Allison Cameron is an immunologist and one of the original members of Gregory House's diagnostic team. She is frequently characterized by compassion and a strong concern for patients, qualities that contrast with House's abrasive style. Cameron's medical judgment is also shaped by personal experiences with serious illness and loss.
Jennifer Morrison portrayed Cameron from the series premiere and remained a major cast member through the character's evolving roles at Princeton-Plainsboro. Cameron's professional relationship with House, as well as her connections with Chase and Foreman, contributes to the show's early ensemble dynamic.
Cameron is sometimes confused with Lisa Cuddy because both are prominent women doctors at the hospital. Cuddy is played by Lisa Edelstein and specializes in endocrinology, whereas Cameron is played by Jennifer Morrison and specializes in immunology.