Maintenance of a functional HIV-specific CD4 T cell response correlates with long term non-progression of HIV disease.

保持有效的HIV特异性CD4细胞应答与长时间非进行性HIV有关。

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Both "helper" (CD4) and "cytotoxic" (CD8) T-cell classes have been described.

现已明确两类T细胞：辅助性T细胞(CD4)和细胞毒性T细胞(CD8)。

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The review summarized the characters of CD4 + CD25 + regulatory t cell and its roles in the mechanism of pathogenesis, therapy and prognosis of asthma.

本文就CD 4 + CD 25 +调节性T细胞的特性及与支气管哮喘的发病机制、治疗、预后的研究进展做一综述。

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Two specific types of immune system cell that attack invaders - CD4 T-cells and natural killer cells - increased in number with age, with a higher rate of increase in women than in men.

BBC: Biological clue to why women live longer than men