has_participant has participant positive regulation of cell population proliferation up-regulation of cell proliferation up regulation of cell proliferation stimulation of cell proliferation GO:0008284 Any process that activates or increases the rate or extent of cell proliferation. biological_process positive regulation of cell proliferation activation of cell proliferation upregulation of cell proliferation regulation of cell population proliferation positive regulation of cellular process Fungi baculoviral IAP repeat-containing protein 5 (human) prothrombin (human) macrophage colony-stimulating factor 1 receptor (human) tyrosine-protein kinase Lyn (human) interleukin-6 receptor subunit alpha (human) 5-hydroxytryptamine receptor 1A (human) fibroblast growth factor 2 (human) platelet-derived growth factor receptor beta (human) androgen receptor (human) mast/stem cell growth factor receptor Kit (human) muscarinic acetylcholine receptor M1 (human) cyclin-dependent kinase 4 (human) platelet-derived growth factor receptor alpha (human) 5-hydroxytryptamine receptor 2A (human) D(3) dopamine receptor (human) receptor-type tyrosine-protein kinase FLT3 (human) 5-hydroxytryptamine receptor 2B (human)