1 23 Cytotechnology Incorporating Methods in Cell Science International Journal of Cell Culture and Biotechnology ISSN 0920-9069 Cytotechnology DOI 10.1007/s10616-012-9471-0 A comprehensive study on optimization of proliferation and differentiation potency of bone marrow derived mesenchymal stem cells under prolonged culture condition M. Dhanasekaran, S. Indumathi, R. P. Lissa, R. Harikrishnan, J. S. Rajkumar & D. Sudarsanam