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Experiments with the aim of a more exact division of a layered tissue in stereological investigations.

Investigations concerning cell densities and projection areas in layered tissues, which use the procedures published by Haug, are burdened with problems due to the division of the layers and the dependence on the size of the evaluation field. In order to find a more exact division, we used a modified microscopic field. Experiments show that a circular field has no advantage as compared with a quadratic field. Therefore, the circular field cannot be recommended.