Please go through my publication, "Concepts of Dhatu Siddhanta (theory of tissues formation and differentiation) and Rasayana; Probable Predecessor of Stem Cell Therapy", AYU International Journal, 35 (3), 2014, Web Sci. & Pubmed Central indexed DOI: 10.4103/0974-8520.153731 PMID: 26664231.
Paper is clearly focusing on how herbs can change the fate of stem cells and nourishes the micro-environment in which cells grow and develop.