... stoichiometries and P 50 values approaching those of the adult. These findings are significant because they indicate that modulation of C. magister hemocyanin oxygen-affinity during development incorporates differences in intrinsic affinity and differences in divalent cation sensitivity of the stage-specific...

... at different concentrations and from measurements at different Ca 2+ concentrations in the absence of other divalent cations the following ratio of apparent dissociation constants could be derived: k Ni : k Co : k Ca : k Mn : k Mg = 1:3:4·3–4·7: 5:6·5. With a confidence of 95% the absolute value of k Ca lies...