There are no missing amino acids. Dr Hahn has, however, found nine places along the amino-acid chain of killifish AHR where the link in the chain varies between individuals.

Hahn博士已经发现他们没有缺失的氨基酸，但沿ahr的氨基酸链上有9个部位的链接存在个体变异。

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Recently, researchers found the missing link: the immediate ancestor of the Human Immunodeficiency Virus.

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