Abstract
Micro-Particle Induced X-ray Emission (PIXE) analysis was applied to determine the ionic composition of different layers of human placental vessels. The laminae of arterial walls were clearly identified by means of their elemental maps. In the same manner, the endothelial cells bordering the lumen were identified, cell by cell, and analyzed separately. Using this model, we investigated the influence of incubations in various physiological fluids on the ionic composition of the walls and of endothelial cells.
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