A tortoise suffering from malnutrition has no such protection against disease, he has no defenses left to fight invaders, and will often succumb to a minor infection.

营养不良的龟龟在疾病面前没有这样的保护，他们没法抵抗细菌，很小的感染就会要了他们的命。

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C-reactive protein is widely used as a clinical marker to determine if a patient has an infection, but also if he or she may be at risk for disease later in life.

反应蛋白被广泛作为确定病人是否被感染的一个临床指标，但也被用来预测病人日后患疾病的风险。

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If your dog is urinating blood, that means he probably has a urinary tract infection.

如果你的狗尿血，这意味着他可能有泌尿道感染。

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"If you have somebody who has an infection -- he has a draining infection -- and he gets some of his pus on a bench, that staph's going to be there for hours or days before it dries out, " he said.

CNN: NFL stars no match for bacteria

The government has said Chavez is "fighting for his life" and has an infection and respiratory problems, but he has not been seen or heard from publicly in nearly three months.

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He has received treatment for a recurring lung infection and pneumonia.

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