Type II alveolar cells are among the last cells to mature during fetal development. In babies born prematurely, type II alveolar cells are often not ready to perform their functions. Which of the following drugs would be most likely to help an infant with immature type II alveolar cells?
A. Pulmonary surfactant
B. A muscarinic agonist
C. Histamine
D. A beta-adrenergic agonist
E. A beta-adrenergic antagonist
Answer: A
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