PGR and infection: Among the 52 known PDGF BB transcriptional targets and 40 known PGR transcriptional targets that were differentially expressed following 16 h of infection, only 6 (11.5% and 15%, respectively) are known targets of both pathways (Fig. 3C), suggesting that PDGF BB and PGR mediate the regulation of distinct transcriptional modules in response to A. fumigatus infection (Fig. 3C).