It is due the difference in RH Factof (+/-). Please go through the below link which will give you a more clear picture.
http://pregnancy.about.com/cs/rhfactor/a/aa050601a.htm
It is due the difference in RH Factof (+/-). Please go through the below link which will give you a more clear picture.
http://pregnancy.about.com/cs/rhfactor/a/aa050601a.htm