Normal human pulmonary artery vascular cells (EC, Fibs, SMCs, N=5 for each cell type) were cultured under normoxia or hypoxia (1.5% O2) for 16 hours, and then cells were collected for RNA preparation. The same set of genes that were examined in vivo were studied here. Results were from at least 5 different cell populations for each cell type, in which result for a specific cell population was from three independent N or H experiments here or other similar experiments in this paper. A) Classical HIF target genes. B) Genes involved in inflammation. C) Genes involved in signaling. Statistical significance determined by t-test.