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The cryopreservation of cells in tissues is one of the major challenges in current cryobiology, especially with regard to the progressively increasing field of tissue engineering. It is very questionable whether protocols which were developed for the cryopreservation of isolated cells are also applicable for cells in more complex structures, such as(More)
It has recently been shown that keratinocytes, both in suspension and in monolayers, can be successfully cryopreserved with hydroxyethyl starch (HES) (6, 9). HES is a nontoxic biodegradable macromolecule which is clinically approved as a plasma expander and which has already been used for the cryopreservation of red blood cells (10, 11). In this study we(More)
Reduction of mercury content in communal waste water and sludge is mandatory. The release rate of Hg from dental amalgam (gamma 2 Lux Alloy) in waste water was determined. The Hg-ionic rate was found to be as low as 0.004% of total mercury content in waste water. In addition, the concentration of Hg (4.39-8.20 mg/kg), Ag (73.35-84.03 mg/kg and Sn(More)
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