Many years ago,when I worked as a volunteer at Stanford Hospital,I got to know a little girl   1 £¨ÊäѪ£©   2  her 5-yearª²old brother, 3 had miraculously survived the same disease and had developed the antibodies needed to fight the   4 ª¥ (ill).(name)Liz who was suffering from a rare and serious disease.Her only chance of recovery appeared to be a blood transfusion