Explorative studies on karyometric frequency distributions. I. Quantitative description and comparison of curves with 2 maxima.

A mathematical procedure is introduced describing frequency distributions of nuclear size with 2 maxima sufficiently by the evaluation of three parameters which are directly representative for the curves: the positions of the first and second maximum and the percentage ratio of the first maximum related to the second maximum. This approximation is a prerequisite to statistical comparison and interpretation of the curves.