Objective To access the feasibility of mesenchymal stem cells conditioned media(MSC-CM) in treating pulmonary hypertension(PH) rats.Methods The study was performed at the National Center of Stem cell from March to October 2010.24 SD rats were divided into PH model group,MSC-CM treatment group and control group,8 rats in each group.Rat model of PH was induced by single subcutaneous injection of monocrotaline(MCT),and the rats in the treatment group were treated by intraperitoneal injection of MSC-CM during t...