Grey’s Anatomy - Season 7 Episode 13

Derek breaks ground on his Alzheimer\’s clinical trial and Meredith can\’t help but feel left out; Bailey\’s attempt to take the hospital into the age of new media with live tweets from the OR does not go over well with the Chief; and Callie, Mark and Arizona must learn to navigate through the pregnancy together, which starts off with Callie driving her new obstetrician crazy.