c (Symptoms of hemolytic transfusion reactions are fever, chills, flushing, chest and back pain, hypotension, nausea, dyspnea, shock, renal failure, and DIC. Circulatory overload, allergic, and anaphylactic reactions are not characterized by fever.) 78) A family has been typed for HLA because 1 of the children needs a stem cell donor. Typing results are listed below:
child #1: A1,2;B8,12
child #2: A1,23;B8,18
child #3: A3,23;B18,?
What is the expected B antigen in child #3?