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CDplayer
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Would you tell me what it is (cd4+ T-cell populations)?
CD4+ T-cell populations are a type of white blood cell that plays a crucial role in the immune system. They are a subset of T-cells and are characterized by the presence of a protein called CD4 on their surface. These cells help coordinate the immune response by recognizing and attacking foreign pathogens.
The main function of CD4+ T-cells is to help regulate the immune response. They do this by releasing signaling molecules called cytokines, which activate other immune cells to fight off infections. CD4+ T-cells also help activate B-cells, which produce antibodies to neutralize pathogens.
In HIV/AIDS, the human immunodeficiency virus (HIV) specifically targets and destroys CD4+ T-cells. This leads to a weakened immune system and makes individuals more susceptible to infections and diseases. As the number of CD4+ T-cells decreases, the body's ability to fight off infections decreases as well.
CD4+ T-cells can be measured through a blood test called a CD4 count. This test measures the number of CD4+ T-cells in a sample of blood and is used to monitor the health of individuals with HIV/AIDS. A lower CD4 count indicates a weaker immune system and a higher risk of developing opportunistic infections.
Yes, CD4+ T-cells have been used in certain medical treatments, such as immunotherapy for cancer. In this treatment, a patient's own CD4+ T-cells are modified and reinfused into their body to help fight cancer cells. Research is also being done on using CD4+ T-cells in gene therapy to treat genetic diseases.