| http://www.w3.org/ns/prov#value | - l, one end of which is connected to the light emitter, and the other end of each is connected to a controller; the light transmitting probe irradiating the subject with light when fixed to the holder, and being characterized in that the end portion of the housing has a number of rod-shaped protrusions, the light emitter is a number of light emitting elements, the light emitting elements are respec
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