Because of the complementary roles of the these two genes, a protective Factor B variation can protect against AMD, even if one carries a risk-increasing variant of Factor h, and vice versa.

因为这两个基因的附属作用，即使携带了因子h的一个危险性突变，因子b的一个保护性突变也可以对抗amd。反之亦然。

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To prove that factor a has no effect whatever on outcome b may be important in the sense that it refutes a hypothesis.

证明因素 a 对结果 b 没有任何影响可能是重要的，因为它驳斥了一个假设。

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The rhesus factor protein is the next most important one after the a and B proteins.

该恒河猴因子蛋白是未来最重要的一后，A和B的蛋白质。

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Without intrinsic factor, vitamin B-12 can't be absorbed and leaves your body as waste.

CNN: Vitamin deficiency anemia

Former X Factor star Misha B has scored her first top 10 hit with Do You Think Of Me.

BBC: Robbie Williams

The holiday season is (a) upon us and (b) often the deciding factor in whether a given brand had a successful year or not.

FORBES: Competition Promises To Be Fierce For Brands This Holiday Season