Hi, I M Dr.Kumarbhargav
Consultant Pathologist
I understood your query
Regarding your
blood group 'A' positive means your red blood cells have antigens of A and H on their surface and your serum contains opposite anti -B antibody.
This is inherited through blood group genes.
Now there are many blood group systems.
ABO blood group system is commenst that defines either A, B, AB or O group.
RH system defines whether you are positive or negative for it.
Apart from this there are many other blood group system others are like MNS, lutheran, kell, lewis, kidd, p and many more.
You also might have heard about Bombay blood group which is also rare blood group.
Thanks for contacting health care magic.
Ask if you want more details. It is good to hear from you that you wanted to know about blood group. Keep updated.