  We describe a percolation-type approach to modeling of the processes of aging
and certain other properties of tissues analyzed as systems consisting of
interacting cells. Tissues are considered as structures made of regular
healthy, senescent, dead (apoptotic) cells, and studied dynamically, with the
ongoing processes including regular cell division to fill vacant sites left by
dead cells, healthy cells becoming senescent or dying, and other processes.
Statistical-mechanics description can provide patterns of time dependence and
snapshots of morphological system properties. An illustrative application of
the developed theoretical modeling approach is reported, confirming recent
experimental findings that inhibition of senescence can lead to extended
lifespan.
