As yet little was known of the causes of the disease.

当时人们对这种疾病的起因几乎一无所知。

《牛津词典》

Recent research has thrown new light on the causes of the disease.

最近的研究可以使人进一步了解导致这种疾病的原因。

《牛津词典》

They researched into the causes of the disease.

他们研究这病的起因。

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By studying the order of the genes, the researchers found the causes of the disease.

VOA: special.2010.03.23

It's reproduction of the virus and passage of that virus onto new cells which causes the problems with disease that we associate.

病毒一旦繁殖并进入新细胞,就会带来相关病症的危害

耶鲁公开课 - 生物医学工程探索课程节选

Coronary artery disease is one of the major causes of death in western countries.

冠状动脉疾病,是西方国家主要致死性疾病之一

耶鲁公开课 - 生物医学工程探索课程节选

To be sure, plenty of obese people never develop diabetes, and plenty of fit people do: the causes of the disease are not purely behavioural.

ECONOMIST: Diabetes

In contrast to the body of research focusing on the causes of heart disease, studies of smoking bans generally compare hospital admissions for heart attack before and after a smoking ban.

FORBES: Do Smoking Bans Really Save Lives? If So, Whose?

The hormone was prepared from human pituitary glands recovered from cadavers, and the absence of rigorous collection guidelines and purification procedures permitted contamination of the formulated drug with the agent that causes Creutzfeldt-Jacob disease, the human equivalent of "mad-cow disease, " or bovine spongiform encephalopathy (BSE).

FORBES: Magazine Article