| | Re: FBS vs FCS
FBS (bovine is a more accurate rep than calf) does not have a very different composition than the serum that could be obtained from you or me. Albumins, Igs, assorted other proteins, chemokines, growth factors, minerals, vitamins and some complex lipids. There is no exact composition for FBS - in fact, even the same catalogue # from the same manufacturer can have different compostions. To mitigate this variability, most companies make large batches, QC them well, and recommend you test your serum and stockpile a large batch. This is especially critical for some cell lines, primary cultures, dox-inductible/tet-off systems.
Thanks in advance,