Physiology Blood brain barrier is formed by? A Foot processes of astrocytes and endothelial cells B Foot processes of oligodendrocytes and endothelial cells C Foot process of microglia and endothelia cells D Foot process of glial cells and endothelial cells 💡 Explanation Blood brain barrier is formed by? ✓ Correct Answer: A. Foot processes of astrocytes and endothelial cells