p50 and p52 are essential for LTβR-induced adhesion molecules. Loss of LTβR-induced expression of adhesion molecules in p50-and p52-deficient MEFs. WT, Nfkb1^-/-, and Nfkb2^-/- MEFs were stimulated for 2 to 3 days with a control (gray lines) or agonistic LTβR (black lines) antibody, stained with VCAM-1 or ICAM-1 antibodies, and analyzed by flow cytometry.