If you have B- blood, which blood types would you NOT want to receive in a transfusion?

If you have type A blood, you cannot get either type B or AB red blood cells. If you have type B blood, you cannot get type A or AB red blood cells.

Explanation:

If you have type A blood, you cannot get either type B or AB red blood cells. If you have type B blood, you cannot get type A or AB red blood cells.