Radium-226 is accumulated in calcium granules in the tissues of the freswater mussel, Velesunio angasi: Support for a metabolic analogue hypothesis
- Publisher:
- Elsevier B.V.
- Publication Type:
- Journal Article
- Citation:
- Comparative Biochemistry and Physiology - Part A: Molecular & Integrative Physiology, 1984, 79A (1), pp. 61 - 72
- Issue Date:
- 1984-01
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Abstract-\. The distribution of226Ra, Ca, Ba and Mg in the tissues of the freshwater mussel, Velesunio angasi, was studied. 2. The concentration of 226Ra is significantly (P < 0.05) and positively correlated with the concentrations of the alkaline earths, Ca, Mg and Ba, in dissected tissues of V. angasi. 3. Alpha track autoradiography, electron microprobe and X-ray analysis, and histochemical studies have shown that 226Ra, Ca, Mg and Ba are co-located predominantly in granular deposits that are dispersed throughout the body of V. angasi. 4. The value of such a co-Iocational study in supporting hypotheses of analogous metabolic behaviour between the non-essential 226Ra and Ca has to be assessed in relation to the functions attributed to calcium granules. 5. Granules may simultaneously accumulate 226Ra and act as a store of exchangeable Ca.
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