The Shepherd Method

The Shepherd Method is a treatment created by Derek Shepherd and Meredith Grey to save lives. In the case of people with inoperable tumors, they would inject the patient and the medicine would shrink the tumor from within.

Grey's Anatomy, Season 4
Meredith approached Derek with the revelation that she may have found a way to save lives. After he agreed to help, they started a clinical trial.

During surgery it was like they were blind, going around hoping to find something. All their patients died except for their last, Beth Monroe..

Grey's Anatomy, Season 5
The treatment was published in a medical journal and named the Shepherd method. Meredith was annoyed that it was called the Shepherd method (since she came up with it) but he insisted that she was only a baby yet and that he was the driving force behind it. After speaking with Bailey, he apologised to Meredith and ggave her a kidney in a jar.