Related to BAG1 mRNA, its expression was observed on 32 p.i. and forth in both mouse lineages, being higher in C57BL/6 than in BALB/c chronically-infected mice (Figure 4C), and these levels were correlated to cyst-like structures in the brain (r = 0.9328; p = 0.0066) (Figure 4D and Figure S1 D). This evidence concerns the gene BAG1 and cyst.