That required the arrival of Yersinia Pestis, the actual causative agent of the disease itself.

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However, it is difficult to identify the causative agents in complex chronic diseases, which can take many years to develop.

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The first step toward that reaffirmation is to acknowledge all the evidence and causative analysis that observers like Davidoff can marshal.

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These findings suggest that our understanding of the causative factors of atherosclerosis is incomplete, and that atherosclerosis could be inherent to the process of human ageing.

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"I consider that those circumstances gave rise to a breach of duty which on a balance of probabilities was causative of the claimant's accident, " she said.

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"This study shows a possible causative effect, " she says.

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And the very worst, if the climate change continues to happen in spite of what we do, we will undoubtedly have bought ourselves a lot of extra time to deal with those changes by removing the worst of the causative factors.

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