Bovine exosome-free FBS that has been heat inactivated, for labs that would like to use Exo-FBS but require heat inactivation. Fetal bovine serum, or FBS, is an important component of many types of cell culture media, and some researchers require heat inactivated FBS. But for researchers interested in isolating exosomes from cultured cells, standard heat inactivated FBS can introduce unwanted complications—bovine exosomes, which can cause significant background issues or interfere with functional studies. Which is why SBI developed heat inactivated Exo-FBS, our patented exosome-depleted FBS.