CJCP     2010 12 (11):  891-896    ISSN: 1008-8830  CN: 43-1301/R Effects of antenatal administration of dexamethasone and betamethasone on signal transduction of bone morphogenetic protein in the fetal lungs of rats CHEN Xiao-Qing, WU Sheng-Hua, ZHOU Xiao-Yu Neonatal Medical Centre, Nanjing Children's Hospital, Nanjing Medical University, Nanjing 210008, China. Email: zhouxiaoyu811@yahoo.com.cn Received: null  Revised: null  Online: null Supporting info