Cation Specificity of Thrombocyte Agglutinating Activity (TAg) of Canine Plasma.

Abstract
The effect of each of 15 divalent or trivalent cations on the thrombocyte agglutinating activity (TAg) of canine plasma was tested. Adsorption of plasma with BaSO4 had little, if any, effect on TAg activity. In adsorbed resin-treated plasma TAg was active only in the presence of Mg++; Mn++, Fe++, Co++, or Ni++, with Mg++ being effective in the lowest concentration. Seeming differences in cation specificity of TAg in plasmas containing the chelating agents, oxalate and EDTA, are discussed.

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