HLA-DRA and infection: Regarding the expression levels of HLA/DRA, serotypes a, b, and c were capable of inducing a statistically significant overexpression of this molecule compared to the non-infected condition at both times of infection (p = 0.0004, p = 0.0110, and p = 0.0045 for the serotypes a, b, and c, respectively, at 2 h of infection, and p = 0.0042, p < 0.0001, and p < 0.0001 for the serotypes a, b, and c, respectively, at 24 h).