KIT and Sepsis: Sepsis was induced by experimental models in mice; cecal ligation and puncture (CLP) and lung infection with Streptococcus (S.)pneumoniae. TSCs were isolated from the chorionic villi of human (h) term placentas, and from mouse (m) placentas using anti-CD117 MicroBeads, and were administered intravenously 6 h after CLP or S. pneumoniae infection.