The authors discuss their assessment of the technique of membrane filtration of the cerebrospinal fluid based on an analysis of over 200 cytograms obtained using Milipore membrane filters. Filtration was done in Kistler's apparatus by the method of Kistler-Bischoff and the preparations were stained with hematoxylin and eosin. In the light of the obtained results and various envisaged possibilities of use the authors recommend this condensation technique as a method of choice in cytodiagnostic examinations of the cerebrospinal fluid.
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