单词	T4 cell
释义	T4 cell noun : any of the T cells (such as a helper T cell) that display the CD4 molecule on their surface and become severely depleted in AIDS called also T4 lymphocyte Word History Etymology T cell + CD4 First Known Use 1983, in the meaning defined above Medical Definition T4 cell noun ˌtē-ˌfō(ə)r-  : any of the T cells (as a helper T cell) that display the CD4 molecule on their surface and become severely depleted in AIDS called also helper-inducer T cell, T4 lymphocyte
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