| http://www.w3.org/ns/prov#value | - For example, one important feature is provided by the illumination of the contents C of each capillary tube 65 by use of the axially directed precision or collimated light beam B. That is, substantially all of the light emitted by the laser 107 is confined within the capillary tube by total internal reflection and only the light which illuminates a particle such as a cell or cell colony is scatter
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