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Bohr and Haldane effects. Left: Bohr: Increasing PCO2 decreases the affinity of Hb for O2, shifting the oxy-Hb dissociation curve down and to the right. Right: Haldane: Increasing PO2 deceases the affinity of Hb for CO2 shifting the carboxy-Hb dissociation curve down and to the right. The Bohr effect aids release of O 2 in metabolizing tissues; the Haldane effect aids release of CO2 in lung capillaries. (Adapted from Dash45)
