Which of these correctly describes the chloride shift?
A. In the lungs, chloride enters red blood cells in exchange for bicarbonate ions.
B. In the tissues, chloride exits red blood cells in exchange for carbonic acid.
C. In the tissues, chloride enters red blood cells in exchange for bicarbonate ions.
D. In the lungs, chloride enters red blood cells in exchange for CO2.
E. In the tissues, chloride enters red blood cells in exchange for CO2.
C
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