The distribution of Feulgen stained nuclei in the periphery of human head and neck tumours--cytophotometric investigations.

With single cell cytophotometry we investigated the distribution of Feulgen stained cell nuclei of ENT tumours. In the periphery of exophytically growing tumours these cells seem to be distributed homogeneously. Because of the difficulties in determination of the DNA synthesizing cells Feulgen cytophotometry should be completed by other cell kinetic methods e.g. pulse cytophotometry and autoradiography.