Mass production of biopharmaceuticals in mammalian cells is expensive. Therefore, manufacturers are looking for cheaper alternatives. Bacteria do not come into account as production factories because they do not have special required sugar structures Of its cell walls. Ciliates possess these necessary properties of mammalian cells, additionally they are small and inexpensive to breed.
More information:
http://biooekonomie.de/komplexe-einzeller-als-arzneifabriken
http://www.cilian.de/