22. Question : What is the most common cause of iron deficiency anemia (IDA)?
23. Question : A person with type O blood is considered to be the universal blood donor because type O blood contains which of the following?
24. Question : An individual is more susceptible to infections of mucous membranes when he or she has a seriously low level of which immunoglobulin antibody?
25. Question : It has been determined that a tumor is in stage 2. What is the meaning of this finding?
26. Question : How is most of the oxygen in the blood transported?
27. Question : Which substance has been shown to increase the risk of cancer when used in combination with tobacco smoking?
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