Table 2. Pathway analysis.

Pathway	Signature	P value
TGF-beta signaling pathway	early peak	2.2e-04*
Oxidative stress response	early peak	3.9e-04*
Platelet derived growth factor (PDGF) signaling pathway	early peak	5.2e-03
Angiotensin II-stimulated signaling through G proteins and beta-arrestin	early peak	0.024
Phosphatidylinositol 3 (PI3)-kinase pathway	early peak	0.016
Angiogenesis	early peak	0.021
Toll receptor signaling pathway	late peak	8.6e-05*
Integrin signalling pathway	late peak	8.5e-04*
Cadherin signaling pathway	late peak	8.4e-03
Apoptosis signaling pathway	late peak	0.037
Notch signaling pathway	decay	3.3e-03

P values for the over-representation of CAGE clusters in 73 Panther gene sets containing at least 20 genes. P values are calculated by hypergeometric test on the counts of clusters from all four data sets combined. Only pathways with p values ≤ 0.05 are listed (those with a FDR significant at 0.1 are indicated by *).