[Analysis of the Quastler--Sherman method and several questions concerning cell kinetics]

Examination of the Quastler--Sherman method revealed its non-correctness to measure the duration of G1-period and of mitotic cycle due to two points. First, the Quastler-Sherman method defines the duration of mitotic cycle period in an unnatural direction. Second, the method is based on the assumption of the equality in durations of the mitotic and cell life cycles. Therefore, the duration of presynthetic period and mitotic cycle appears to be extended. The data obtained show the temporal link between the kinetics of the mitotic cycle and the kinetics of the diurnal rhythm. It is suggested that the duration of mitotic cycle is equal to the period of diurnal rhythm of mitotic activity.