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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Accumulation of vanadium during embryogenesis in the vanadium-rich ascidian, Ascidia gemmata.

It is a remarkable and previously unrecognized fact that ascidians, which are known to contain high levels of vanadium in their blood cells, begin to accumulate vanadium during embryogenesis. This study revealed that the accumulation starts quite dramatically 2 wk after fertilization, and 2 mo later, the amount of vanadium in larvae is 600,000 times higher than that in the unfertilized egg. These results were obtained by neutron activation analysis, a highly sensitive method for determining levels of vanadium, in the Ascidia gemmata, the ascidian that contains the highest known levels of vanadium and accumulates vanadium at 150 mM in its blood cells, a concentration that corresponds to 4,000,000 times the concentration in seawater.[1]

References

  1. Accumulation of vanadium during embryogenesis in the vanadium-rich ascidian, Ascidia gemmata. Michibata, H., Uchiyama, J., Seki, Y., Numakunai, T., Uyama, T. Biological trace element research. (1992) [Pubmed]
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