Maternal how know that when the embryo can give birth to baby?The latest research result of American scientist think that along with continuously develop maturity, embryo lung department to secrete in the amniotic fluid of a kind of protein will increase gradually, thus"tell" the maternal embryo's lung have already develop mature, can carry on a temple to outside breathe.This kind of protein gave birth to baby the function of hormone.
Get gram the researcher of the Sa Si university southwest medical center at new an expect the United States
