The quantification of the EcoHIV RNA genome copies in the serum recovered from the mice infected with EcoHIV showed minimal signs of infection after weeks 1 and 2 post-infections (<200 RNA copies/mL), and at 3-weeks post-infection, about 596 RNA copies/mL were detected in the serum recovered from the Becn1+/+ mice and 532 RNA copies/mL in the serum recovered from the Becn1+/− mice (Figure 3C). This evidence concerns the gene BECN1 and infection.