system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
DiGeorge’s syndrome is characterized by a deficiency of _____.
assistant
The correct answer is  DiGeorge’s syndrome is characterized by a deficiency of T cells. It is caused by the failure of the third and fourth brachial pouches to develop normally, resulting in a lack of thymus and parathyroid development.