CDKN2A and infection: We have shown that already in the early phase of infection, MCMV massively reorganizes the Arf system and increases the levels of class I and class II Arf proteins (Figure 1A,B,D,E and Figure 2A,B,D,F) and leads to accumulation of all Arfs in the perinuclear area of infected cells (Figure 1C,F, Figure 2C,F and Figure 3C).