APEX2 and infection: In comparison, 5 nM aTc induction of IncATM-APEX2 or APEX2 alone resulted in slightly smaller inclusions (Figure 4A), which were “less” bright (27.51 ± 1.176 and 39.83 ± 0.6889, respectively) than the controls at 25 h post-infection (36.79 ± 1.219 and 50.87 ± 0.8435, respectively), a difference that was measured to be statistically significant (p < 0.0001).