NKT细胞是一种具有混合功能的细胞：它们既能如自然杀伤细胞般杀死入侵微生物，又能如t细胞般与抗原(能激发免疫反应的外源物质)结合。
NKT cells are hybrids: they kill invading microbes, like natural killer immune cells, but they also bind to antigens - foreign substances that trigger an immune response - like T-cells do.
Ca2 +可以激发酶系统，从而帮助引发人体免疫反应——科学家们想知道Pb 2 +是否有相同的效果。
Ca2 + stimulates enzymatic systems that help trigger the body's immune defences - the investigators wondered if Pb2 + did the same.
而在这项研究里，博阿索的团队从病毒周围细胞膜上移除胆固醇，发现这可阻止艾滋病病毒激发先天性免疫反应。
In their study, Boasso's team removed cholesterol from the membrane around the virus and found that this stopped HIV from triggering the innate immune response.
当病毒感染人体，会激发一系列生化反应，导致免疫细胞存活或死亡的结局。
When a virus infects a person, it triggers a series of biochemical reactions in immune-system cells that literally may have life or death consequences.
这种结合激发了免疫系统，触发了一系列反应最终阻止了血管形成。
That aroused the immune system, setting off a chain of events that stopped the blood vessel formation.
在辅助T细胞激发针对病原的免疫反应之前，它必须感觉到位于抗原递呈细胞面表的入侵者分子片段。
Before a helper t cell can trigger a response to a pathogen or parasite, it has to "feel" these molecular bits of an invader displayed on the surface of an antigen-presenting cell (APC).
目的：探讨改善外周血来源的树突状细胞（DC）体外培养的方法，以促进DC的成熟并提高其递呈抗原和激发特异性免疫反应的能力。
PART I The Improvement of Dendritic Cell Culture Measures in vitroObjective: Improve the measures of dendritic cell culture in vitro, to increase the rate of mature and function of DC.
目的：探讨改善外周血来源的树突状细胞（DC）体外培养的方法，以促进DC的成熟并提高其递呈抗原和激发特异性免疫反应的能力。
PART I The Improvement of Dendritic Cell Culture Measures in vitroObjective: Improve the measures of dendritic cell culture in vitro, to increase the rate of mature and function of DC.
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