
doi: 10.1007/bf02949493
pmid: 13278078
(1) When the microscope specimen is illuminated by both sub-stage and supra-stage sources, those parts of the preparation that appear black when viewed by the transmitted (sub-stage) light can be coloured by the reflected (supra-stage) light. In this way a two-coloured picture with marked contrast can be obtained.
Microscopy, Lighting
Microscopy, Lighting
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