FCGR1A and parasitic infectious disease: The proportion of CD64+ cells after parasite infection in vitro instead even decreased among monocytes from both groups of individuals when compared to freshly isolated cells (i.e., those analyzed at 0 h) but this was not specific to parasite infection since it also occurred by in vitro cultivation for 48 h in the absence of T. gondii (Figure 4B; p < 0.001; ANOVA).