BASIC KNOWLEDGE OF BLOOD GROUPS
There is always a confusion between people,that there is a danger in marrying
people of similar blood
GROUP like b+ with b+ or a+ with a+, let me explain,we always give blood group as for eg: a+ or a-.The + and - sign represents Rh factor, there would be problem for second baby if only female has Rh
factor as -(negative) and her husband has + (positive) if they fall under same blood group. But now a days science is so developed that no need to worry.
This piece of information was just for general knowledge
More abstracts about the Blood groups