Cells at Work! CODE BLACK! Episode 12 English Dubbed Episode Title:Return, the Heart, and Demise.Episode Description:AA2153 finally returns to work and resumes coaching a rookie. When they pass by the stomach, he is traumatized by remembering what happened to AC1677, but cheers up when the gastric cell remembers him and says he is glad he is all right, so he works with gusto. The blood vessels have been rupturing and filling with plaque, forcing the platelets to repair them and hindering the red blood cells. Eventually, the coronary artery is completely blocked...