We describe a method of growing an animal cell in a culture medium, in which the culture medium comprises an elevated concentration of a thymidine family member, in which the growth or viability of the animal cell is increased as a result of the elevated concentration of the thymidine family member in the cell culture medium. Preferably, the cell culture medium comprises a semi-solid medium, which is a serum free or chemically defined medium.
Clivio, Pascale; Fourrey, Jean-Louis; Gasche, Jeanette, Journal of the Chemical Society. Perkin transactions I, 1992, # 18, p. 2383 - 2388