Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test General Science Biology Biology in Everyday life
In transfusion, blood must be compatible not only in blood type but also in
1
Rh factor
2
the number of white cells
3
the number of red cells
4
More than one of the above
5
None of the above