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
AIDS virus spreads in the body through (MHT-CET)
assistant
The correct answer is  Helper T cells are arguably the most important cells in adaptive immunity, as they are required for almost all adaptive immune responses.
They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.