What is cell culture? Cell culture is the complex process by which cells are grown under controlled conditions. It is living cells that are maintained in vitro in artificial media of serum and nutrients for the study and growth of certain strains, experiments in controlling diseases, or study of the reaction to certain drugs or agents. One of the many technologies that focus on cell culture media is Stemcell.com. This website focuses on six specialized cell culture including embryonic stem cells & iPS cells, hematopoietic stem & progenitor cells, mesenchymal stem cells, neural stem & progenitor cells, mammary epithelial cells, and prostate epithelial cells.