Question
Question: ABO blood grouping is based on the presence or absence of \_\_\_\_\_\_ surface antigens...
ABO blood grouping is based on the presence or absence of ______ surface antigens
A
2
B
3
C
6
D
12
Answer
2
ABO blood grouping is based on the presence or absence of ______ surface antigens
2
3
6
12
2