Differences in systemic measurements of liver function [i.e., alanine transaminase (ALT), aspartate aminotransferase (AST), and total bilirubin], were also assessed by comparing values obtained from baseline time points prior to infection (days -49 to -3), those taken in the pre-control period (determined to be prior to days 31-35 post infection), and in the controlled period (Figures 4H–K). Here, GPT is linked to infection.