In controls, NF-κB2 and RelB exhibit a similar nuclear localization in Meckel's cartilage chondrocytes (Figs. 4E, I), with no substantial differences in NF-κB2 and RelB protein expression being seen with mCMV infection (compare Figs. 4F to 4E, 4J to 4I). Here, NFKB2 is linked to infection.