Grupo de diferenciación: Diferenzas entre revisións
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Liña 49:
Two commonly used CD molecules are [[CD4]] and [[CD8]], which are, in general, used as markers for [[T helper cell|helper]] and [[cytotoxic T cell|cytotoxic]] T cells, respectively. These molecules are defined in combination with CD3+, as some other leukocytes also express these CD molecules (some macrophages express low levels of CD4; [[dendritic cells]] express high levels of CD8). Human immunodeficiency virus (HIV) binds CD4 and a chemokine receptor on the surface of a T helper cell to gain entry. The number of CD4 and CD8 T cells in blood is often used to monitor the progression of HIV infection.
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