Registered nurse Erika Obrietan administers the third dose of an experimental breast cancer vaccine to patient Kathleen Jade at University of Washington Medical Center - Montlake, Tuesday, May 30, 2023, in Seattle. Jade, 50, learned she had breast cancer in late February. She's getting the vaccine to see if it will shrink her tumor before surgery. “Even if that chance is a little bit, I felt like it’s worth it," said Jade, who is also getting standard treatment. (AP Photo/Lindsey Wasson)