This beak can pierce plant or animal tissue to suck up liquids like sap or blood.

这支喙可以刺入植物和动物组织来吸取植物液或者是血液。

And microorganisms that would otherwise quickly decompose plant and animal tissues operate at slower metabolic rates in these subfreezing temperatures.

在这些低于冰点的温度下，原本会迅速分解植物和动物组织的微生物以较慢的代谢率运作。

Valeti started out as a cardiologist, who understood that doctors have been developing human and animal tissues in laboratories for decades.

Valeti 最初是一名心脏病专家，他了解医生几十年来一直在实验室开发人体和动物组织。

Prior to the advent of gene cloning and protein production via recombinant DNA techniques, it was necessary to purify these molecules from animal tissues or donated human blood.

这两种来源都有缺陷，包括非人源蛋白功能上的细微差异以及可能存在的病毒的污染。

Mechanical valves can also be created from man-made materials and can last longer than animal tissue, but these often require the patient to take an anticoagulant, which is a medicine used to help prevent blood clots.

机械瓣膜也可以由人造材料制成， 并且比动物组织使用寿命更长，但这些通常需要患者服用抗凝剂，这是一种用于帮助预防血栓的药物。