ERVW-1 and infection: In agreement with this hypothesis, we observed that TBP (involved in inducing viral GE), Vp9 (involved in viral genome replication39) and MIP-T3 (able to induce microtubular reorganization) had a bell-shaped profile, while genes that linearly increased their expression levels were mostly structural viral genes, such as VP24, VP26 or envelope proteins and their expression is increasing in later stages of infection when new viral particles are being produced, in agreement with the morphogenesis model from Escobedo-Bonilla et al. 7.