Adaptation of permanent bovine kidney cells to serum free hormone supplemented cell culture media

The examinations show, that it is possible to adapt MDBK-cells (ATCC CCL 22) to serum-poor (0.1% fetal calf serum) and to serum-free, adequate supplemented media. Morphology of the cells remained unchanged. The components of the serum-free medium are a 50:50 mixture of Dulbecco's modified Eagle's medium and HAM's F12 medium, supplemented with insulin (5 micrograms ml-1), transferrin (10 micrograms ml-1), thyroglobulin (10 micrograms ml-1), prostaglandin E1 (50-100 ng ml-1). Seeding cells at a density of 26.10(3) cm-2 at day 0 resulted in better multiplication than a higher seeding density.