Question

What are different types of blood group?What are the conditions to donate blood?

Answer 1

A+,A-,B-,B+,O-,O+,AB+,etc.All group can donate to their same blood group.O+ are known as the universal donaters as they can donate blood to all groups except O-.Hope it helps and pls mark as the best answer. :-)

Answer 2

A;B;AB;O
O is universal donor and AB is universal recipient.