Living organisms are endowed with three structural principles: multicellular architecture, cellular division., and cellular differentiation. Implemented in digital according to these principles, our data and signals cellular systems present self-organizing mechanisms like configuration, cloning, cicatrization, and regeneration. These mechanisms are made of simple processes such as growth, load, branching, repair, reset, and kill. The data. processed in the self-organizing mechanisms and the signals triggering their underlying processes constitute the core of this paper.