Methods and apparatus for recording decomposition of accounting system entries are disclosed. The markers may be either i) the presence of markers specific for mesenchymal precursor cells, ii) the absence of markers specific for differentiated mesenchymal cells, or iii) expression levels of markers specific for mesenchymal precursor cells. The remote unit is selected from the group laptop computer, key ring, GPS watch, cellular telephone and PDA, and it utilizes a GPS to store a location of the user. The energy of rotational inertia is shifted from the developing device assembly to the inertia acceptor when the inertia acceptor stops the rotation of the developing device assembly.