deficiency of B lymphocytes
The adoptive parents were so excited when the new infant son was placed in their arms and they took him home. As far as everyone knew, the baby was healthy and was growing at an acceptable rate. However, at about 6 months, he started experiencing numerous infections. A review of the biological mother’s past history does not reveal any clues and the father’s history is unavailable, so the parents agree to genetic testing to determine if there might be a genetic reason for these infections.