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Human Disease Questions

Question 1

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Answer 1

As people are constantly exposed to airborne fungi, their immune system responds immediately, rejecting the invader. When the immune system is compromised in some way, infection may be established. Causes of immune suppression include disease (HIV, cancer, diabetes), treatments (cyclosporin A, prolonged use of antibiotics) or biotic factors (pregnancy, or very old or young age).

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Question 2

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Answer 2

The fungus commonly adopts a yeast-like form, enabling dissemination through the blood stream or lymphatic system. Warm temperatures and rich growth conditions commonly cause adoption of the yeast form.

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Question 3

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Answer 3

Definitely. The fungus is normally constrained to the dermal layers where it is protected from the immune response. In the absence of an immune response, the fungus will continue to degrade keratin, digesting into living tissue. Tinea can be a serious problem for people with AIDS.

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Question 4

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Question 5

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Question 6

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Question 7

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