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500 cells/mm3 to 1,000 cells/mm3 CD4 T cells
CD4 cells are a subtype of T cells, which are produced in the thymus gland and regulate the immune system's response to infected or malignant cells.
helper T cells
HIV attacks and kills CD4 helper T cells.
That is unlikely, since the HIV virus directly attacks the CD4 cells. In time, the virus will destroy all CD4 cells. Without medications, that will happen sooner rather than later.
CD4 cells are T helper cells that help fight infection. Yes, lupus can cause a drop in your CD4 count.
A low CD4 cell count typically indicates a weakened immune system, often due to conditions like HIV or other infections. CD4 cells play a critical role in the immune response, so a low count can make the body more vulnerable to opportunistic infections and illnesses. Monitoring CD4 cell counts is important in managing conditions that affect the immune system.
T helper cells, also called CD4+ T cells (or just CD4 cells) are part of the immune system, but they are also the main target cells that HIV infects and uses to reproduce.
The viral load is a measure of how much HIV is present in the blood. A high viral load count would indicate the person has many copies of the virus in their body. The CD4 count, on the other hand, indicates how many CD4 or T-helper cells the person has. CD4 cells are part of the immune system. When they are destroyed, their numbers drop. This is what the HIV virus does--it destroys CD4 cells. Therefore, if a person has a low CD4 count, that means that their immune system is not functioning well, if at all.
CD4 cells cannot be purchased as they are a cell that is within the body. They are part of the immune system and help fight infections and disease within the body.
Helper (CD4+) T Cells
CD4 is a surface receptor expressed by helper T lymphocytes, known as CD4+ T cells. Its purpose is to stablize the interaction between the T cell receptor (on the T cell) and an antigen-bearing MHC Class II molecule (on an antigen presenting cell). Under the right circumstances, this interaction activates CD4+ T cells that recognize an invading pathogen. Activated CD4+ T cells do many things, and are required for a robust adaptive immune response.