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ID 15004
file
creator
Takemoto, Kuniko
Fayard, Barbara
Salomé, Murielle
Yamamoto, Akitsugu
Kihara, Hiroshi
Susini, Jean
Scippa, Silvia
Uyama, Taro
Michibata, Hitoshi
subject
vanadium
ascidians
vanadocytes
X-Ray microscopy
synchrotron radiation
NDC
Zoology
abstract
Some ascidians (sea squirts) accumulate the transitional metal vanadium in their blood cellsat concentrations of up to 350 mM, about 10 7 times its concentration found in seawater. There are approx-imately 10 different types of blood cell in ascidians. The identity of the true vanadium-containing blood cell(vanadocyte) is controversial and little is known about the subcellular distribution of vanadium. A scanningx-ray microscope installed at the ID21 beamline of the European Synchrotron Radiation Facility to visualizevanadium in ascidian blood cells. Without fixation, freezing or staining realized the visualization of vana-dium localized in living signet ring cells and vacuolated amoebocytes of two vanadium-rich ascidian spe-cies, Phallusia mammillata and Ascidia sydneiensis samea . A combination of transmission andfluorescence images of signet ring cells suggested that in both species the vacuoles contain vanadium.
journal title
Zoological science
volume
Volume 19
issue
Issue 1
start page
27
end page
35
date of issued
2002
publisher
Zoological Society of Japan
issn
0289-0003
ncid
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Science