CD4 cells have several other names, making it important to clarify which "second name" is being sought. Here are a few:
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Helper T cells: This is perhaps the most common alternative name. CD4 cells are crucial for coordinating the immune response, "helping" other immune cells to fight off infections. This is explicitly stated in multiple sources like MedlinePlus (https://medlineplus.gov/lab-tests/cd4-lymphocyte-count/) and the NIH (https://clinicalinfo.hiv.gov/en/glossary/cd4-t-lymphocyte).
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CD4 T lymphocytes: This name is more precise, highlighting that CD4 cells are a specific type of lymphocyte, a crucial component of the adaptive immune system. This terminology is used in various sources including MedlinePlus (https://medlineplus.gov/lab-tests/cd4-lymphocyte-count/).
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T4 cells: This is a shorter, more informal name for CD4 cells, reflecting their role as helper T cells. This is mentioned in Wikipedia (https://en.wikipedia.org/wiki/CD4).
The best "second name" depends on the context. For general understanding, "helper T cells" is the most accessible and widely used. For scientific accuracy, "CD4 T lymphocytes" is preferred.
