S4·E11 Maternal Mirrors
Aired September 14, 2003
Synopsis
When a patient of Andy's takes a turn for the worse under Lu's watchful eye, the two doctors butt heads over whether proper procedure was followed. Meanwhile, Andy questions whether or not she can trust her oldest daughter. Also, when Andy and Morton try an experimental xenotransplant (using the heart of a chimpanzee), Peter questions the rights of the animal.