[The circadian evolution of the karyometric indices of the inner hair cells. A statistical analysis].
We have realized a statistic study about "Karyometric Index" in the hair cells of the Corti organ of the albino Wistar rat [correction of guinea pig] in thirty of these animals; after in vivo fixation. The Karyometric Index variations are a good indicator of the cellular basic functional activity. Therefore we tried to clarify if the their cells are or not resembling to other cellular types with the functional circadian circles as well as if they present it or not in their basic functionalism, as they are also included in the "Endocrine Difusse System" and the "Paraneuron" concepts.
Risk estimation in radiation carcinogenesis depends primarily on epidemiological data and hazard rate models. The A-bomb survivors follow-up provides information on the complexity of this process. Several hazard rate models are briefly discussed and illustrated using the A-bomb experience.