A. To filter out extra salt, waste, and fluids B. To properly draw out nitrogenous wastes C. To provide a larger surface area for reabsorption of fluids D. To regulate percentage of water and salts so that excess water and unwanted salts in the body will not be accumulated. 22. If a person cannot produce antibodies, what possibly may happen to him?

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Q: What antibodies does a person with  B+ blood contain?

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Respiratory Infections

Respiratory infections are infectious diseases of the respiratory tract that are mostly caused by bacteria and viruses. They cause infections of the throat, sinuses, airway path, and lungs. Respiratory infections are typically divided into two types: upper tract respiratory infection and lower tract respiratory infection.