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  • Microlenses may detect biological weapons
    Scientists at the Georgia Institute of Technology have developed a method of detecting trace amounts of biological or chemical agents in seconds, much faster than traditional methods which can take up to a day. On the left, a microlens is in the on state and ready to detect. The right shows
  • Medical Device Link . A Practical Guide to ISO 10993-12: Sample Preparation and Reference Materials
    to each study, sample preparation and reference materials are covered in ISO 10993-12. The standard describes the types of test samples, suitable extraction vehicles and conditions, and appropriate reference materials to be used as controls. This article reviews the standard's requirements
  • Transmission Electron Microscopy for Imaging of Biological Molecules
    Diffraction-limited resolution of 0.25nm is routinely obtained with a cold field-emission electron-gun operating at 40keV. The sample is maintained at about 123K (i.e.C), both to eliminate contamination and to reduce mass-loss.
  • Imaging Gas-Solid Interactions in an Atomic Resolution Environmental TEM
    aluminum foils as upper and lower windows sandwiching a biological sample to sustain a living environment. The electron transparent windows permitted the confined biological objects to be imaged in TEM mode. Since then, environmental TEM (E-TEM) has received increasing attention from biological
  • Medical Device Link .
    , but not in cases where it is necessary first to introduce a functional probe into the body and then to quantify the probe in a biological sample. Since most biological samples, such as tissue or blood, are opaque or have high background activity, optical probes work poorly unless they are extracted
  • Medical Device Link . Development applications for membrane-bottom microwell plates
    versatility. Membranes may be used as prefilters, as exemplified by borosilicate glass filters; for general biological sample filtration, as seen with cellulose acetate filters; or for high protein retention and DNA and RNA binding, as seen with nitrocellulose membranes. Nylon membranes are inherently
  • Medical Device Link .
    the potential to revolutionize biological sample testing. Bringing such sensitive tests to hospital laboratories, patients� point-of-care (POC), production floors, and emergency first responders presents a considerable challenge because of the complex steps that are required to set up and perform
  • Medical Device Link . Thermal Management Techniques for Medical and Laboratory Equipment
    , and the working time or shelf life of a biological sample or laboratory reagent can be increased by keeping the substance at an optimal temperature. Instruments such as DNA cyclers, tunable laser diodes, and thermal-stress analyzers all require a capacity for cycling an object or sample through a range

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