Updated project metadata. The aim of the present study was to analyze four different in vitro models of the murine BBB for expression and possible secretion of major basement membrane proteins from murine BCECs (mBCECs). The mBCECs and pericytes were isolated from brains of adult C57BL/6 mice, and glial cells (mainly astrocytes and microglia) were prepared from cerebral cortices of newborn C57BL/6 mice. The mBCECs were grown as mono-culture, in co-culture with pericytes or mixed glial cells, or as a triple-culture with both pericytes and mixed glial cells.