Cell Culture MediaThe cell culture media, is the nutritious mixture that cells grow in, which includes the cell culture serum. The cell culture media provides all of the nutrients and growth factors that cells may need to replicate or differentiate into another cell type. There are two main obstacles in scaling cell culture serum: its sourcing and price. In many scientific labs, a common cell culture serum used to grow cells is fetal bovine serum. Not only would this still involve animal sourcing in the production process, fetal bovine serum is inconsistent from batch to batch as well as very costly. Animal-free serums have been developed for medical purposes, but the problem of costliness remains for scaling production.