Hosts can be diseased from latency condition by the decreasing of host's immunity and stimulation of condition, and so on , then become a carrier and infectious source.

外界刺激、宿主免疫力的降低等因素都可以使宿主由潜伏感染状态发病，成为带毒者和传播源，因此，对潜伏感染建立及维持机理的研究就显得尤为重要。

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The trick will be in replacing diseased cells with just the right kind of neuron, says Jeff Macklis, who studies neurogenesis at the Massachusetts Institute of Technology.

诀窍就在于：要用正确类型的神经元细胞取代病变细胞，麻省理工学院神经新生研究人员杰夫·麦克利斯说道。

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Diagnosis: eye drops would be used in the test to highlight diseased cells at the back of the eye.

诊断：检测中使用眼药水来突显眼睛后部的病变细胞。

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If you suspect that seeds may be diseased, place them in water at fifty degrees Celsius for twenty minutes.

VOA: special.2009.03.03

The third source of ritual impurity would be genital discharges, both normal and diseased.

第三个仪式上不洁的来源是生殖器排放，包括正常的和有疾病的。

耶鲁公开课 - 旧约导论课程节选

And,finally,do not add diseased vegetable plants to the pile if the compost will be used on a vegetable garden.

VOA: special.2009.06.23

Some organs appeared to be from diseased animals.

BBC: The story of how the tin can nearly wasn't

The original plan involved moving the war memorial in the Market Place to allow more space for remembrance services, and removing and replacing the existing trees - said to be either diseased or causing root damage - with 25 new ones.

BBC: Plans to redevelop Salisbury Market Place 'thrown out'

Scientists say the new liver cells could be injected into a diseased liver.

FORBES: Geron Gets Cloning Patents