“…Consequently, this system would be highly effective at responding promptly to a number of stimulations, promoted by nervous signaling, microarchitectural remnants of destroyed tissues, metabolites of energy generating processes, peptide growth factors, etc. (7)(8)(9). Physiologically, in the endocrine pancreas, hormone-producing cells that are at the end of their life span should be continuously, albeit quite slowly, replaced by newly generated cells.…”