DeanGregorio3362 DeanGregorio3362

21-11-2019
Biology

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The most frequently used portal of entry for pathogens is the A) mucous membranes of the respiratory tract. B) mucous membranes of the gastrointestinal tract. C) skin. D) parenteral route. E) All of these portals are used equally. A

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chelseacornelius12 chelseacornelius12

21-11-2019

Answer:A

Explanation:

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