What type of T cells are designated as CD4+ T cells?

Prepare for the AAB Medical Technologist (MT) Generalist Exam with flashcards and multiple choice questions. Each question includes hints and explanations to boost your understanding. Get exam-ready now!

CD4+ T cells are specifically identified as helper T cells. These cells play a crucial role in the immune response by assisting other cells in the immune system. They primarily function by activating and regulating immune responses, including the stimulation of B cells to produce antibodies and enhancing the activity of cytotoxic T cells and macrophages. The "CD4+" designation comes from the presence of the CD4 glycoprotein on their surface, which distinguishes them from CD8+ T cells, which are cytotoxic T cells.

The role of helper T cells is fundamental in orchestrating the adaptive immune response, as they release cytokines that facilitate the action of various immune cells, thereby promoting an efficient and effective immune response against pathogens. This differentiation in T cells is vital for maintaining immune system balance and ensuring that the body can respond effectively to infections while minimizing the risk of autoimmune reactions.

Other types of T cells, such as cytotoxic T cells, regulatory T cells, and memory T cells, have distinct functions and surface markers that differentiate them from CD4+ T cells. Cytotoxic T cells, for instance, express CD8 and are primarily involved in killing infected or cancerous cells. Regulatory T cells, which help modulate the immune response and maintain self-t

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