Abstract: The present invention relates to a chemically defined medium for eukaryotic cell culture, comprising water, at least one carbon source, one or more vitamins, one or more salts, one or more growth factors, one or more fatty acids, one or more buffer components, selenium and one or more further trace elements and its use in the culture of cancer stem cells, in particular tumorsphere culture of cancer stem cells.

Abstract: The invention relates to an aqueous solution for cell preservation of preferably mammalian cells, which can be used for cell preservation as a cryoprotectant or as a pharmaceutical product or excipient. Furthermore, the invention relates to a method for preserving cells using the aqueous solution for cell preservation, and to a method for defrosting cells which are frozen in the aqueous solution.

Abstract: The present invention relates to a chemically defined medium for eukaryotic cell culture, comprising water, at least one carbon source, one or more vitamins, one or more salts, one or more fatty acids, one or more buffer components, selenium, at least one substance of the group of Functional Inhibitors of Acid Sphingomyelinase (FIASMAs) and at least one polypeptide of the GF-? superfamily with the ability to inhibit stem cell differentiation, its use in the culture of human pluripotent stem cells, a cell culture system comprising human pluripotent stem cells and the chemically defined medium, as well as a kit for proliferation and/or maintenance of human pluripotent stem cells.

Abstract: The present invention relates to a chemically defined medium for eukaryotic cell culture, comprising water, at least one carbon source, one or more vitamins, one or more salts, one or more growth factors, one or more fatty acids, one or more buffer components, selenium and one or more further trace elements and its use in the culture of cancer stem cells, in particular tumorsphere culture of cancer stem cells.