Cell cultures or “In vitro cell culturing” is a process necessary for modern medical research and stem cell treatments.  There are several means by which cell growth and therapeutic cloning of needed cells may be achieved through the use of an artificial laboratory culture growth medium. 
Cell Culture Video
Researchers in hematopoietic allogeneic and autologous stem cell function are continuing to explore other methods of achieving cell differentiation through culture for the transformation of new types of cells.
Published Clinical Citations
 ^ Chen, Guo-ling, Ying Xiao, Yang-yang Du, Yan-li Liu, Zhi-yu Liu, and Han Zhang. 2013. [Differentiation of mesenchymal stem cells induced by co-culture method]. Zhongguo yi xue ke xue yuan xue bao. Acta Academiae Medicinae Sinicae, no. 6. doi:10.3881/j.issn.1000-503X.2013.06.007. https://www.ncbi.nlm.nih.gov/pubmed/24382239
 ^ Kedjarune, U, S Pongprerachok, P Arpornmaeklong, and K Ungkusonmongkhon. 2001. Culturing primary human gingival epithelial cells: comparison of two isolation techniques. Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery, no. 4. https://www.ncbi.nlm.nih.gov/pubmed/11562092
 ^ Osathanon, Thanaphum, Philaiporn Vivatbutsiri, Waleerat Sukarawan, Wannakorn Sriarj, Prasit Pavasant, and Sireerat Sooampon. 2014. Cobalt chloride supplementation induces stem-cell marker expression and inhibits osteoblastic differentiation in human periodontal ligament cells. Archives of oral biology, no. 1 (September 6). doi:10.1016/j.archoralbio.2014.08.018. https://www.ncbi.nlm.nih.gov/pubmed/25244616