This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hemoglobinopathies: Sickle cell anemia, Subject name: Pathology
[{'content': 'All the following features precipitate sickling of HbS except: \nSelect and explain. \nA. Hypoxia, B. Dehydration, C. Infections, D. Alkalosis', 'role': 'user'}, {'content': "Answer: D \nExplanation: - Acidosis precipitate the sickling of HbS not alkalosis. - Conditions that precipitate sickling of HbS are: Increase in concentration of the HbS. Acidosis Hypoxia Dehydration. Exercise. infections - Paicularly seen in those organs in which time taken for RBC's to pass through it is more (organs having sluggish circulation)", 'role': 'assistant'}]