Example of a gene network derived from genes uniquely regulated at 48 hours, comprising 3 merged networks consisting of 444 genes (red, increased expression; green, decreased expression) as derived from Ingenuity Pathway Analysis. Selected regions of the network are highlighted, consisting of genes involved in: (a) Antimicrobial response, Inflammatory response, Cell-To-Cell Signaling and Interaction (“MX1 genes”, network score 23); (b) Cell Death, Cell Signaling, DNA Replication, Recombination and Repair (“CASP genes”, network score 33); (c) Cellular Development, Hematological System Development and Function, Hematopoiesis (“RB1 genes”, network score 37).