Background The lack of translatable in vitro blood-tumor barrier (BTB) models creates challenges in the development of drugs to treat tumors of the CNS and our understanding of how the vascular changes in the BBB in the presence of a tumor. markers and one marker subject to efflux. Results The permeability of Sulforhodamine 101 was… Continue reading Background The lack of translatable in vitro blood-tumor barrier (BTB) models