The title refers to a high-stakes medical mystery where Dr. Gregory House must solve a case involving a set of triplets whose identical DNA makes diagnosing their divergent symptoms a nightmare . The Case of the Mirror Triplets
House discovers that the sisters were all taking a specific "natural" performance-enhancing supplement to stay thin for gymnastics. Because of a rare phenomenon in female development (skewed X-inactivation), each sister's body processed the supplement's toxins differently: Dr. House: 2Г—3
The breakthrough comes when Chloe, the "healthy" one, finally collapses. House realizes the common denominator isn't what they are doing , but what they are taking . The Diagnosis: The title refers to a high-stakes medical mystery where Dr
