April stays optimistic as Arizona begins testing on her baby; Dr. Herman plans out a crash course in fetal surgery; and Owen and Callie encourage each other to get back into the dating scene. Meanwhile, Meredith, Maggie and Bailey use the 3D printer to gain a better understanding of their patient's tumor.
Casts:
Chandra Wilson, James Pickens Jr., Kevin McKidd, Caterina Scorsone, Camilla Luddington, Kim Raver, Chris Carmack, Jake Borelli, Anthony Hill, Adelaide Kane, Alexis Floyd, Niko Terho, Midori Francis, Harry Shum Jr.