University revision · Parasitology

Malaria Parasitology and Diagnosis

Question 1 of 39 Course: Biomedical Science(Degree)

Which of the following is the definitive host in the malaria life cycle?

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A key quality indicator for adequate sputum samples is the presence of alveolar macrophages, which confirm that the specimen originates from the lower respiratory tract. Other indicators include minimal squamous epithelial contamination (suggesting saliva), adequate cellularity, and good preservation. The American Thoracic Society recommends that satisfactory sputum samples should have fewer than 10 squamous epithelial cells per low-power field and presence of alveolar macrophages. Samples without these features may be rejected or reported as unsatisfactory for evaluation of lower respiratory tract pathology.

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