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University of Bern, Institute of Anatomy, Bern, Switzerland

http://www.ana.unibe.ch/

  • Safe High Pressure Freezing of Infectious Microorganisms

    Especially in core EM-facilities one is confronted with material (microorganisms and cells) which are infectious. It is a must to follow the safety rules according to the National regulations. However even when safe laboratories are available it is very convenient to know that the applied high pressure freezing system is in itself safe.
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  • Dry Ultrathin Sectioning Combined With High Pressure Freezing

    We have used cultured UMR106-01 osteoblastic cells to investigate the process of bone mineralization. UMR106-01 cells as well as primary calvarial bone cells assembly spherical extracellular supramolecular protein-lipid complexes, termed biomineralization foci (BMF), in which the first crystals of hydroxyapatite mineral are deposited (Midura et al., 2004; Wang et al., 2004). A major difference between these culture models is the speed with which mineralization occurs, ranging from 12–16 days after plating for primary osteoblastic cells to 88 h for UMR106-01 cells.
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