Natural killer cells, which are a class of lymphocyte distinct from t cells and B cells, destroy foreign cells (eg, neoplastic cells) even without prior sensitization.

自然杀伤细胞是一类与T细胞和B细胞不同的淋巴细胞，可在未被致敏的情况下破坏外来细胞(如肿瘤细胞)。

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Combining these distinct gene-delivery vaccination approaches has the potential to induce higher levels of t cell responses and a different quality of response than either approach by itself.

联合使用这些基因表达疫苗的方法具有引导更高水平T细胞应答以及于单独使用不同的应答反应的潜力。

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Why don't bacteria need a distinct nucleus and that's necessary in a human cell?

为什么细菌不需要单独的细胞核,而对人类细胞则为必需

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So the mere fact that we decide, if we do ultimately decide that there is a soul, something nonphysical, separate and distinct from the body, doesn't guarantee that we survive our physical death.

根据我们仅有的事实去判断,如果我们最终判定灵魂是存在的,它是一种无形的,独立的,与肉体截然不同的东西,但仍不能保证我们会在肉体死亡后活下来

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But, he added, "unless those games aren't available on our current or next-generation platforms I don't know if it gives them a distinct advantage, " he said.

WSJ: Nintendo Targets Intense Action With Next Wii

If the screen isn't big enough by itself, there's a very distinct possibility we'll finally see LTE in the iPhone.

ENGADGET: iPhone 5: the rumor roundup Mobile

One thing about Facebook that a lot of people don't realise is that Facebook has two distinct types of advertising already, that they're already selling in large quantity, and they have a whole bunch of commerce businesses that are being built around their so called credits product, and where this is evident so far is in the gaming business.

BBC: Facebook's potential 'unlimited'