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NL888 Posted 12 years ago
Grammar

In secreting toxins in infections -- causing...?

Does " in secreting toxins in infections -- causing ulcers, whooping cough, or severe forms of pneumonia such as Legionnaires' disease" mean " in secreting toxins in infections -- because the toxins cause ulcers, whooping cough, or severe forms of pneumonia such as Legionnaires' disease"

Context:

The study, published today in Nature, reveals the mechanism of bacterial type IV secretion, which bacteria use to move substances across their cell wall. As type IV secretion can distribute genetic material between bacteria, notably antibiotic resistance genes, the mechanism is directly responsible for the spread of antibiotic resistance in hospital settings. It also plays a crucial role in secreting toxins in infections -- causing ulcers, whooping cough, or severe forms of pneumonia such as Legionnaires' disease.

http://www.sciencedaily.com/releases/2014/03/140309150544.htm
  

Top answer

NL888 Does " in secreting toxins in infections -- causing ulcers, whooping cough, or severe forms of pneumonia such as Legionnaires' disease" mean " in secreting toxins in infections -- because the toxins cause ulcers, whooping cough, or severe forms of pneumonia such as Legionnaires' disease" Not exactly. In secreting toxins in infections -- causing = in secreting toxins in infections which cause ...

  • NL888 Does " in secreting toxins in infections -- causing ulcers, whooping cough, or severe forms of pneumonia such as Legionnaires' disease" mean " in secreting toxins in infections -- because the toxins cause ulcers, whooping cough, or severe forms of pneumonia such as Legionnaires' disease" Not exactly.
  • In secreting toxins in infections -- causing = in secreting toxins in infections which cause ...
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5 Answers
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NL888Does " in secreting toxins in infections -- causing ulcers, whooping cough, or severe forms of pneumonia such as Legionnaires' disease" mean " in secreting toxins in infections -- because the toxins cause ulcers, whooping cough, or severe forms of pneumonia such as Legionnaires' disease"
Not exactly. In secreting toxins in infections -- causing =
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Do you mean that the infections cause ulcers, whooping cough...?
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Not exactly—the toxins apparently intensify the infections into those worse cases.
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Thanks.
It sounds reasonable. But grammatically, which causes those symptoms? From your answers, I got the impression that both (toxins and infections cause the symptoms), yet neither exactly causes them. I'm confused.
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...secreting toxins in infections, causing ulcers...

It will take a physiologist to decide exactly what causes the ulcers; to me it seems the combination of toxins & infections. You cannot rely on grammar structure to do all your thinking for you.

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