Even though Sandra Oh put away her Grey's Anatomy scrubs years ago, it's clear she still views Cristina Yang as her "person."

The Killing Eve star marked her 50th birthday on Instagram and devoted a section of the celebration to her beloved character on the ABC medical drama. Toward the end of her lengthy caption on the July 20 post, Sandra thanked her muses, including Cristina from Grey's Anatomy and Eve Polastri from Killing Eve. The Canadian actress played the surgeon from 2005 to 2014, earning her five Emmy Award nominations in the Supporting Actress in a Drama Series category from 2005 to 2009.